./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-21.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_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/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_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-21.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/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_deee5165-f033-453a-973e-9df9d6ae78dd/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 a5f3ef2fb9cd0571dbcab4509830c8891a8d69d7e58533d6cefb8c79dfd0705c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:07:08,361 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:07:08,426 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:07:08,432 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:07:08,432 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:07:08,459 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:07:08,459 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:07:08,460 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:07:08,460 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:07:08,461 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:07:08,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:07:08,462 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:07:08,463 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:07:08,463 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:07:08,464 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:07:08,464 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:07:08,465 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:07:08,465 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:07:08,466 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:07:08,466 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:07:08,467 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:07:08,467 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:07:08,468 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:07:08,468 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:07:08,469 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:07:08,469 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:07:08,470 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:07:08,470 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:07:08,471 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:07:08,471 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:07:08,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:07:08,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:07:08,472 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:07:08,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:07:08,472 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:07:08,473 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:07:08,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:07:08,473 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:07:08,473 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:07:08,473 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:07:08,474 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:07:08,474 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:07:08,474 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_deee5165-f033-453a-973e-9df9d6ae78dd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5f3ef2fb9cd0571dbcab4509830c8891a8d69d7e58533d6cefb8c79dfd0705c [2023-11-29 04:07:08,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:07:08,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:07:08,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:07:08,734 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:07:08,735 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:07:08,736 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-21.i [2023-11-29 04:07:11,590 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:07:11,765 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:07:11,766 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-21.i [2023-11-29 04:07:11,775 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/data/6e3cf5af1/40b360291b4a46739609345340f7517b/FLAG862ce4f6e [2023-11-29 04:07:11,790 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/data/6e3cf5af1/40b360291b4a46739609345340f7517b [2023-11-29 04:07:11,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:07:11,793 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:07:11,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:07:11,795 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:07:11,799 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:07:11,800 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:07:11" (1/1) ... [2023-11-29 04:07:11,801 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37632f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:11, skipping insertion in model container [2023-11-29 04:07:11,801 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:07:11" (1/1) ... [2023-11-29 04:07:11,827 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:07:11,943 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_deee5165-f033-453a-973e-9df9d6ae78dd/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-21.i[916,929] [2023-11-29 04:07:11,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:07:11,990 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:07:12,002 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_deee5165-f033-453a-973e-9df9d6ae78dd/sv-benchmarks/c/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-21.i[916,929] [2023-11-29 04:07:12,019 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:07:12,031 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:07:12,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:12 WrapperNode [2023-11-29 04:07:12,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:07:12,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:07:12,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:07:12,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:07:12,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:12" (1/1) ... [2023-11-29 04:07:12,047 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:12" (1/1) ... [2023-11-29 04:07:12,070 INFO L138 Inliner]: procedures = 26, calls = 25, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 95 [2023-11-29 04:07:12,070 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:07:12,070 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:07:12,071 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:07:12,071 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:07:12,080 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:12" (1/1) ... [2023-11-29 04:07:12,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:12" (1/1) ... [2023-11-29 04:07:12,083 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:12" (1/1) ... [2023-11-29 04:07:12,096 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 04:07:12,096 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:12" (1/1) ... [2023-11-29 04:07:12,097 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:12" (1/1) ... [2023-11-29 04:07:12,102 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:12" (1/1) ... [2023-11-29 04:07:12,105 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:12" (1/1) ... [2023-11-29 04:07:12,108 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:12" (1/1) ... [2023-11-29 04:07:12,109 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:12" (1/1) ... [2023-11-29 04:07:12,112 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:07:12,113 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:07:12,113 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:07:12,113 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:07:12,114 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:12" (1/1) ... [2023-11-29 04:07:12,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:07:12,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:07:12,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:07:12,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:07:12,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:07:12,191 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 04:07:12,191 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 04:07:12,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:07:12,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:07:12,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:07:12,260 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:07:12,262 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:07:12,487 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:07:12,529 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:07:12,529 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 04:07:12,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:07:12 BoogieIcfgContainer [2023-11-29 04:07:12,530 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:07:12,533 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:07:12,533 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:07:12,537 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:07:12,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:07:11" (1/3) ... [2023-11-29 04:07:12,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f41b12d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:07:12, skipping insertion in model container [2023-11-29 04:07:12,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:07:12" (2/3) ... [2023-11-29 04:07:12,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f41b12d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:07:12, skipping insertion in model container [2023-11-29 04:07:12,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:07:12" (3/3) ... [2023-11-29 04:07:12,541 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-21.i [2023-11-29 04:07:12,557 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:07:12,557 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:07:12,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:07:12,610 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;@2de911ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:07:12,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:07:12,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 04:07:12,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-29 04:07:12,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:07:12,625 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:07:12,626 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:07:12,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:07:12,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1348981652, now seen corresponding path program 1 times [2023-11-29 04:07:12,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:07:12,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686087472] [2023-11-29 04:07:12,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:12,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:07:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:12,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:07:12,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686087472] [2023-11-29 04:07:12,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 04:07:12,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860816489] [2023-11-29 04:07:12,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:12,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:12,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:07:12,783 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:07:12,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:07:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:12,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 04:07:12,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:07:12,965 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-11-29 04:07:12,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:07:12,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860816489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:07:12,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:07:12,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:07:12,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492287959] [2023-11-29 04:07:12,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:07:12,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:07:12,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:07:13,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:07:13,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:07:13,009 INFO L87 Difference]: Start difference. First operand has 38 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 04:07:13,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:07:13,046 INFO L93 Difference]: Finished difference Result 73 states and 128 transitions. [2023-11-29 04:07:13,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:07:13,049 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 74 [2023-11-29 04:07:13,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:07:13,057 INFO L225 Difference]: With dead ends: 73 [2023-11-29 04:07:13,058 INFO L226 Difference]: Without dead ends: 36 [2023-11-29 04:07:13,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 73 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 04:07:13,065 INFO L413 NwaCegarLoop]: 51 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, 51 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 04:07:13,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:07:13,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-29 04:07:13,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-11-29 04:07:13,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 04:07:13,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 54 transitions. [2023-11-29 04:07:13,114 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 54 transitions. Word has length 74 [2023-11-29 04:07:13,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:07:13,114 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 54 transitions. [2023-11-29 04:07:13,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-29 04:07:13,115 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 54 transitions. [2023-11-29 04:07:13,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-29 04:07:13,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:07:13,119 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:07:13,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 04:07:13,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 04:07:13,323 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:07:13,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:07:13,324 INFO L85 PathProgramCache]: Analyzing trace with hash -499078252, now seen corresponding path program 1 times [2023-11-29 04:07:13,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:07:13,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926375644] [2023-11-29 04:07:13,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:13,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:07:13,370 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:07:13,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [352017324] [2023-11-29 04:07:13,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:13,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:13,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:07:13,372 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:07:13,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:07:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:13,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:07:13,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:07:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 143 proven. 15 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-29 04:07:13,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:07:13,739 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-29 04:07:13,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:07:13,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926375644] [2023-11-29 04:07:13,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:07:13,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352017324] [2023-11-29 04:07:13,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352017324] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:07:13,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:07:13,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 04:07:13,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912120444] [2023-11-29 04:07:13,741 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:07:13,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:07:13,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:07:13,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:07:13,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:07:13,744 INFO L87 Difference]: Start difference. First operand 36 states and 54 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-29 04:07:13,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:07:13,876 INFO L93 Difference]: Finished difference Result 75 states and 110 transitions. [2023-11-29 04:07:13,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:07:13,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 74 [2023-11-29 04:07:13,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:07:13,879 INFO L225 Difference]: With dead ends: 75 [2023-11-29 04:07:13,879 INFO L226 Difference]: Without dead ends: 40 [2023-11-29 04:07:13,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:07:13,881 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 30 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:07:13,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 78 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:07:13,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-29 04:07:13,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-29 04:07:13,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-29 04:07:13,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 56 transitions. [2023-11-29 04:07:13,894 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 56 transitions. Word has length 74 [2023-11-29 04:07:13,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:07:13,895 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 56 transitions. [2023-11-29 04:07:13,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-29 04:07:13,895 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 56 transitions. [2023-11-29 04:07:13,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-29 04:07:13,896 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:07:13,896 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:07:13,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:07:14,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:14,097 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:07:14,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:07:14,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1462031462, now seen corresponding path program 1 times [2023-11-29 04:07:14,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:07:14,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941506823] [2023-11-29 04:07:14,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:14,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:07:14,125 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:07:14,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1677409648] [2023-11-29 04:07:14,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:14,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:14,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:07:14,127 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:07:14,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:07:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:14,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 04:07:14,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:07:14,312 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-29 04:07:14,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:07:14,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:07:14,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941506823] [2023-11-29 04:07:14,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:07:14,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677409648] [2023-11-29 04:07:14,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677409648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:07:14,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:07:14,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:07:14,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426406772] [2023-11-29 04:07:14,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:07:14,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:07:14,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:07:14,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:07:14,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:07:14,316 INFO L87 Difference]: Start difference. First operand 40 states and 56 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 04:07:14,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:07:14,418 INFO L93 Difference]: Finished difference Result 118 states and 165 transitions. [2023-11-29 04:07:14,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:07:14,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 75 [2023-11-29 04:07:14,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:07:14,421 INFO L225 Difference]: With dead ends: 118 [2023-11-29 04:07:14,421 INFO L226 Difference]: Without dead ends: 79 [2023-11-29 04:07:14,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 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 04:07:14,424 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 27 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:07:14,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 140 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:07:14,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-29 04:07:14,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2023-11-29 04:07:14,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 40 states have (on average 1.175) internal successors, (47), 40 states have internal predecessors, (47), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-29 04:07:14,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 95 transitions. [2023-11-29 04:07:14,444 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 95 transitions. Word has length 75 [2023-11-29 04:07:14,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:07:14,444 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 95 transitions. [2023-11-29 04:07:14,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 04:07:14,445 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 95 transitions. [2023-11-29 04:07:14,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 04:07:14,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:07:14,447 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:07:14,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:07:14,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:14,651 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:07:14,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:07:14,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1722936822, now seen corresponding path program 1 times [2023-11-29 04:07:14,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:07:14,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580253111] [2023-11-29 04:07:14,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:14,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:07:14,675 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:07:14,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120291733] [2023-11-29 04:07:14,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:14,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:14,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:07:14,677 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:07:14,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:07:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:14,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:07:14,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:07:50,994 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-29 04:07:50,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:07:50,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:07:50,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580253111] [2023-11-29 04:07:50,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:07:50,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120291733] [2023-11-29 04:07:50,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120291733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:07:50,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:07:50,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:07:50,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109388366] [2023-11-29 04:07:50,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:07:50,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:07:50,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:07:50,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:07:50,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:07:50,998 INFO L87 Difference]: Start difference. First operand 69 states and 95 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 04:07:51,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:07:51,141 INFO L93 Difference]: Finished difference Result 95 states and 127 transitions. [2023-11-29 04:07:51,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:07:51,142 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 76 [2023-11-29 04:07:51,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:07:51,144 INFO L225 Difference]: With dead ends: 95 [2023-11-29 04:07:51,144 INFO L226 Difference]: Without dead ends: 93 [2023-11-29 04:07:51,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:07:51,145 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 36 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:07:51,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 179 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:07:51,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-29 04:07:51,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2023-11-29 04:07:51,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 45 states have (on average 1.2) internal successors, (54), 45 states have internal predecessors, (54), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-29 04:07:51,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 102 transitions. [2023-11-29 04:07:51,161 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 102 transitions. Word has length 76 [2023-11-29 04:07:51,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:07:51,162 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 102 transitions. [2023-11-29 04:07:51,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 04:07:51,162 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 102 transitions. [2023-11-29 04:07:51,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 04:07:51,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:07:51,164 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:07:51,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 04:07:51,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:51,364 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:07:51,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:07:51,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1862217962, now seen corresponding path program 1 times [2023-11-29 04:07:51,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:07:51,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838960191] [2023-11-29 04:07:51,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:51,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:07:51,384 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:07:51,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2125219780] [2023-11-29 04:07:51,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:51,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:51,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:07:51,385 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:07:51,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:07:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:51,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:07:51,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:07:51,531 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-29 04:07:51,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:07:51,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:07:51,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838960191] [2023-11-29 04:07:51,531 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:07:51,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125219780] [2023-11-29 04:07:51,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125219780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:07:51,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:07:51,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:07:51,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336226148] [2023-11-29 04:07:51,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:07:51,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:07:51,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:07:51,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:07:51,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:07:51,533 INFO L87 Difference]: Start difference. First operand 74 states and 102 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 04:07:51,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:07:51,603 INFO L93 Difference]: Finished difference Result 174 states and 238 transitions. [2023-11-29 04:07:51,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:07:51,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 77 [2023-11-29 04:07:51,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:07:51,606 INFO L225 Difference]: With dead ends: 174 [2023-11-29 04:07:51,606 INFO L226 Difference]: Without dead ends: 130 [2023-11-29 04:07:51,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 74 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 04:07:51,608 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 46 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:07:51,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 157 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:07:51,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-29 04:07:51,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 114. [2023-11-29 04:07:51,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 71 states have (on average 1.2394366197183098) internal successors, (88), 71 states have internal predecessors, (88), 36 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-29 04:07:51,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 160 transitions. [2023-11-29 04:07:51,633 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 160 transitions. Word has length 77 [2023-11-29 04:07:51,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:07:51,633 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 160 transitions. [2023-11-29 04:07:51,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 04:07:51,633 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 160 transitions. [2023-11-29 04:07:51,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 04:07:51,635 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:07:51,635 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:07:51,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:07:51,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:51,836 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:07:51,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:07:51,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1862277544, now seen corresponding path program 1 times [2023-11-29 04:07:51,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:07:51,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700530399] [2023-11-29 04:07:51,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:51,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:07:51,854 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:07:51,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894451732] [2023-11-29 04:07:51,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:07:51,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:07:51,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:07:51,855 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:07:51,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:07:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:07:51,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 04:07:51,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:08:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2023-11-29 04:08:50,776 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:08:50,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:08:50,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700530399] [2023-11-29 04:08:50,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:08:50,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894451732] [2023-11-29 04:08:50,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894451732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:08:50,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:08:50,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:08:50,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190419192] [2023-11-29 04:08:50,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:08:50,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:08:50,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:08:50,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:08:50,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:08:50,778 INFO L87 Difference]: Start difference. First operand 114 states and 160 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 04:08:52,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:08:52,312 INFO L93 Difference]: Finished difference Result 152 states and 206 transitions. [2023-11-29 04:08:52,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:08:52,312 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 77 [2023-11-29 04:08:52,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:08:52,315 INFO L225 Difference]: With dead ends: 152 [2023-11-29 04:08:52,315 INFO L226 Difference]: Without dead ends: 150 [2023-11-29 04:08:52,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:08:52,316 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 31 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:08:52,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 252 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 04:08:52,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-29 04:08:52,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 118. [2023-11-29 04:08:52,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 75 states have (on average 1.24) internal successors, (93), 75 states have internal predecessors, (93), 36 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-29 04:08:52,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 165 transitions. [2023-11-29 04:08:52,341 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 165 transitions. Word has length 77 [2023-11-29 04:08:52,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:08:52,342 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 165 transitions. [2023-11-29 04:08:52,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 04:08:52,342 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 165 transitions. [2023-11-29 04:08:52,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-29 04:08:52,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:08:52,346 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:08:52,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 04:08:52,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 04:08:52,547 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:08:52,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:08:52,547 INFO L85 PathProgramCache]: Analyzing trace with hash -456201256, now seen corresponding path program 1 times [2023-11-29 04:08:52,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:08:52,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32240471] [2023-11-29 04:08:52,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:08:52,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:08:52,568 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:08:52,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1835996210] [2023-11-29 04:08:52,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:08:52,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:08:52,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:08:52,570 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:08:52,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:08:52,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:08:52,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 04:08:52,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:09:28,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2023-11-29 04:09:28,634 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:09:28,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:09:28,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32240471] [2023-11-29 04:09:28,634 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:09:28,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835996210] [2023-11-29 04:09:28,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835996210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:09:28,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:09:28,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:09:28,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499761528] [2023-11-29 04:09:28,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:09:28,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:09:28,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:09:28,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:09:28,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:09:28,637 INFO L87 Difference]: Start difference. First operand 118 states and 165 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 04:09:28,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:09:28,845 INFO L93 Difference]: Finished difference Result 286 states and 401 transitions. [2023-11-29 04:09:28,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:09:28,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 150 [2023-11-29 04:09:28,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:09:28,850 INFO L225 Difference]: With dead ends: 286 [2023-11-29 04:09:28,850 INFO L226 Difference]: Without dead ends: 198 [2023-11-29 04:09:28,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:09:28,852 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 70 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:09:28,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 228 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:09:28,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-29 04:09:28,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 190. [2023-11-29 04:09:28,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 119 states have (on average 1.2100840336134453) internal successors, (144), 119 states have internal predecessors, (144), 60 states have call successors, (60), 10 states have call predecessors, (60), 10 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-29 04:09:28,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 264 transitions. [2023-11-29 04:09:28,888 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 264 transitions. Word has length 150 [2023-11-29 04:09:28,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:09:28,889 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 264 transitions. [2023-11-29 04:09:28,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 04:09:28,890 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 264 transitions. [2023-11-29 04:09:28,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-29 04:09:28,893 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:09:28,893 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:09:28,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 04:09:29,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 04:09:29,094 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:09:29,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:09:29,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1266553016, now seen corresponding path program 1 times [2023-11-29 04:09:29,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:09:29,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801697981] [2023-11-29 04:09:29,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:09:29,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:09:29,115 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:09:29,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1529906958] [2023-11-29 04:09:29,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:09:29,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:09:29,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:09:29,117 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:09:29,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:09:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:09:29,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 04:09:29,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:09:48,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 5 proven. 93 refuted. 0 times theorem prover too weak. 1031 trivial. 0 not checked. [2023-11-29 04:09:48,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:10:40,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2023-11-29 04:10:40,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:40,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801697981] [2023-11-29 04:10:40,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:10:40,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529906958] [2023-11-29 04:10:40,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529906958] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:10:40,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:10:40,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-29 04:10:40,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168737975] [2023-11-29 04:10:40,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:10:40,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:10:40,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:40,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:10:40,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:10:40,338 INFO L87 Difference]: Start difference. First operand 190 states and 264 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 04:10:43,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:43,911 INFO L93 Difference]: Finished difference Result 296 states and 406 transitions. [2023-11-29 04:10:43,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:10:43,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 151 [2023-11-29 04:10:43,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:43,914 INFO L225 Difference]: With dead ends: 296 [2023-11-29 04:10:43,914 INFO L226 Difference]: Without dead ends: 294 [2023-11-29 04:10:43,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:10:43,915 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 79 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:43,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 246 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-29 04:10:43,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-29 04:10:43,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 268. [2023-11-29 04:10:43,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 169 states have (on average 1.2189349112426036) internal successors, (206), 169 states have internal predecessors, (206), 84 states have call successors, (84), 14 states have call predecessors, (84), 14 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-29 04:10:43,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 374 transitions. [2023-11-29 04:10:43,975 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 374 transitions. Word has length 151 [2023-11-29 04:10:43,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:43,975 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 374 transitions. [2023-11-29 04:10:43,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 04:10:43,975 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 374 transitions. [2023-11-29 04:10:43,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-29 04:10:43,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:43,977 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:43,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 04:10:44,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:44,178 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:44,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:44,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1266493434, now seen corresponding path program 1 times [2023-11-29 04:10:44,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:44,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217390931] [2023-11-29 04:10:44,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:44,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:44,195 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:10:44,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235520514] [2023-11-29 04:10:44,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:44,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:44,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:10:44,196 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:10:44,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 04:10:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:44,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:10:44,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:10:44,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 599 proven. 2 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2023-11-29 04:10:44,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:10:44,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1129 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2023-11-29 04:10:44,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:10:44,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217390931] [2023-11-29 04:10:44,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:10:44,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235520514] [2023-11-29 04:10:44,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235520514] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:10:44,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:10:44,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2023-11-29 04:10:44,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415571702] [2023-11-29 04:10:44,542 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:10:44,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:10:44,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:10:44,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:10:44,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:10:44,544 INFO L87 Difference]: Start difference. First operand 268 states and 374 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-29 04:10:44,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:10:44,743 INFO L93 Difference]: Finished difference Result 560 states and 752 transitions. [2023-11-29 04:10:44,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:10:44,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 151 [2023-11-29 04:10:44,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:10:44,747 INFO L225 Difference]: With dead ends: 560 [2023-11-29 04:10:44,747 INFO L226 Difference]: Without dead ends: 322 [2023-11-29 04:10:44,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 298 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:10:44,750 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 76 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:10:44,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 230 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:10:44,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-11-29 04:10:44,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 293. [2023-11-29 04:10:44,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 187 states have (on average 1.1711229946524064) internal successors, (219), 187 states have internal predecessors, (219), 84 states have call successors, (84), 21 states have call predecessors, (84), 21 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-29 04:10:44,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 387 transitions. [2023-11-29 04:10:44,800 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 387 transitions. Word has length 151 [2023-11-29 04:10:44,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:10:44,801 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 387 transitions. [2023-11-29 04:10:44,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-29 04:10:44,801 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 387 transitions. [2023-11-29 04:10:44,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-29 04:10:44,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:10:44,804 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:10:44,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 04:10:45,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:45,005 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:10:45,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:10:45,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1479629076, now seen corresponding path program 1 times [2023-11-29 04:10:45,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:10:45,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935469253] [2023-11-29 04:10:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:45,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:10:45,020 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:10:45,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [358613329] [2023-11-29 04:10:45,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:10:45,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:10:45,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:10:45,021 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:10:45,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 04:10:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:10:45,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 04:10:45,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:11:28,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1130 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2023-11-29 04:11:28,420 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:11:28,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:11:28,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935469253] [2023-11-29 04:11:28,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:11:28,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358613329] [2023-11-29 04:11:28,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358613329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:11:28,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:11:28,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:11:28,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204056921] [2023-11-29 04:11:28,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:11:28,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:11:28,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:11:28,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:11:28,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:11:28,422 INFO L87 Difference]: Start difference. First operand 293 states and 387 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 04:11:28,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:11:28,719 INFO L93 Difference]: Finished difference Result 301 states and 396 transitions. [2023-11-29 04:11:28,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:11:28,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 152 [2023-11-29 04:11:28,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:11:28,722 INFO L225 Difference]: With dead ends: 301 [2023-11-29 04:11:28,722 INFO L226 Difference]: Without dead ends: 213 [2023-11-29 04:11:28,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:11:28,724 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 61 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:11:28,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 234 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:11:28,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-29 04:11:28,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2023-11-29 04:11:28,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 137 states have (on average 1.167883211678832) internal successors, (160), 137 states have internal predecessors, (160), 60 states have call successors, (60), 15 states have call predecessors, (60), 15 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-29 04:11:28,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 280 transitions. [2023-11-29 04:11:28,763 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 280 transitions. Word has length 152 [2023-11-29 04:11:28,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:11:28,764 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 280 transitions. [2023-11-29 04:11:28,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 04:11:28,764 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 280 transitions. [2023-11-29 04:11:28,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-29 04:11:28,766 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:11:28,766 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:11:28,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 04:11:28,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:11:28,967 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:11:28,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:11:28,967 INFO L85 PathProgramCache]: Analyzing trace with hash 981545948, now seen corresponding path program 1 times [2023-11-29 04:11:28,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:11:28,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312685576] [2023-11-29 04:11:28,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:28,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:11:28,982 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:11:28,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [690600938] [2023-11-29 04:11:28,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:11:28,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:11:28,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:11:28,984 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:11:28,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 04:11:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:11:29,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 04:11:29,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:11:57,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1130 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1123 trivial. 0 not checked. [2023-11-29 04:11:57,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:14:40,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1130 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2023-11-29 04:14:40,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:14:40,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312685576] [2023-11-29 04:14:40,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:14:40,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690600938] [2023-11-29 04:14:40,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690600938] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:14:40,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:14:40,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 12 [2023-11-29 04:14:40,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659645367] [2023-11-29 04:14:40,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:14:40,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:14:40,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:14:40,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:14:40,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:14:40,282 INFO L87 Difference]: Start difference. First operand 213 states and 280 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 04:14:44,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:14:44,054 INFO L93 Difference]: Finished difference Result 234 states and 300 transitions. [2023-11-29 04:14:44,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 04:14:44,054 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 152 [2023-11-29 04:14:44,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:14:44,056 INFO L225 Difference]: With dead ends: 234 [2023-11-29 04:14:44,056 INFO L226 Difference]: Without dead ends: 232 [2023-11-29 04:14:44,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 295 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-11-29 04:14:44,057 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 100 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:14:44,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 330 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 04:14:44,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-29 04:14:44,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 129. [2023-11-29 04:14:44,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 83 states have internal predecessors, (97), 36 states have call successors, (36), 9 states have call predecessors, (36), 9 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-29 04:14:44,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 169 transitions. [2023-11-29 04:14:44,077 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 169 transitions. Word has length 152 [2023-11-29 04:14:44,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:14:44,078 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 169 transitions. [2023-11-29 04:14:44,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 04:14:44,078 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 169 transitions. [2023-11-29 04:14:44,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-29 04:14:44,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:14:44,080 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:14:44,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 04:14:44,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:44,281 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:14:44,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:14:44,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2064772685, now seen corresponding path program 1 times [2023-11-29 04:14:44,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:14:44,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603273464] [2023-11-29 04:14:44,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:44,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:14:44,296 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:14:44,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [587292139] [2023-11-29 04:14:44,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:14:44,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:14:44,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:14:44,297 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:14:44,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 04:14:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:14:44,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 04:14:44,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:15:40,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1130 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2023-11-29 04:15:40,273 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:15:40,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:15:40,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603273464] [2023-11-29 04:15:40,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:15:40,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587292139] [2023-11-29 04:15:40,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587292139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:15:40,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:15:40,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:15:40,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26324680] [2023-11-29 04:15:40,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:15:40,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:15:40,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:15:40,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:15:40,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:15:40,275 INFO L87 Difference]: Start difference. First operand 129 states and 169 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 04:15:40,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:15:40,673 INFO L93 Difference]: Finished difference Result 138 states and 177 transitions. [2023-11-29 04:15:40,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:15:40,674 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 152 [2023-11-29 04:15:40,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:15:40,676 INFO L225 Difference]: With dead ends: 138 [2023-11-29 04:15:40,676 INFO L226 Difference]: Without dead ends: 136 [2023-11-29 04:15:40,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:15:40,677 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 38 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:15:40,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 144 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:15:40,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-29 04:15:40,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 124. [2023-11-29 04:15:40,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 78 states have (on average 1.141025641025641) internal successors, (89), 78 states have internal predecessors, (89), 36 states have call successors, (36), 9 states have call predecessors, (36), 9 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-29 04:15:40,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 161 transitions. [2023-11-29 04:15:40,706 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 161 transitions. Word has length 152 [2023-11-29 04:15:40,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:15:40,707 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 161 transitions. [2023-11-29 04:15:40,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 04:15:40,707 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 161 transitions. [2023-11-29 04:15:40,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-29 04:15:40,709 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:15:40,709 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:15:40,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 04:15:40,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:15:40,910 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:15:40,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:15:40,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1488099775, now seen corresponding path program 1 times [2023-11-29 04:15:40,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:15:40,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703295138] [2023-11-29 04:15:40,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:40,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:15:40,927 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:15:40,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [215351378] [2023-11-29 04:15:40,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:15:40,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:15:40,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:15:40,929 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:15:40,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 04:15:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:15:41,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:15:41,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:16:52,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1124 trivial. 0 not checked. [2023-11-29 04:16:52,870 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:16:52,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:16:52,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703295138] [2023-11-29 04:16:52,870 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:16:52,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215351378] [2023-11-29 04:16:52,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215351378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:16:52,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:16:52,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:16:52,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962752541] [2023-11-29 04:16:52,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:16:52,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:16:52,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:16:52,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:16:52,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:16:52,872 INFO L87 Difference]: Start difference. First operand 124 states and 161 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 04:16:54,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 04:16:54,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:16:54,932 INFO L93 Difference]: Finished difference Result 138 states and 177 transitions. [2023-11-29 04:16:54,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:16:54,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 154 [2023-11-29 04:16:54,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:16:54,933 INFO L225 Difference]: With dead ends: 138 [2023-11-29 04:16:54,933 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 04:16:54,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:16:54,934 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 25 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:16:54,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 217 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 04:16:54,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 04:16:54,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 04:16:54,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:16:54,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 04:16:54,936 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 154 [2023-11-29 04:16:54,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:16:54,936 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 04:16:54,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-29 04:16:54,936 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 04:16:54,936 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 04:16:54,939 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 04:16:54,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 04:16:55,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:16:55,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 04:17:22,448 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-11-29 04:17:22,448 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-11-29 04:17:22,448 INFO L899 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2023-11-29 04:17:22,449 INFO L895 garLoopResultBuilder]: At program point L77(line 77) the Hoare annotation is: (let ((.cse6 (mod ~var_1_1~0 65536))) (let ((.cse0 (or (< 32767 .cse6) (= .cse6 ~var_1_13~0))) (.cse4 (= ~var_1_7~0 0)) (.cse1 (<= 1 (mod ~var_1_12~0 256))) (.cse5 (= ~last_1_var_1_7~0 0)) (.cse2 (or (< .cse6 32768) (= .cse6 (+ 65536 ~var_1_13~0)))) (.cse3 (or (= (mod ~last_1_var_1_13~0 65536) .cse6) (and (<= 0 ~last_1_var_1_13~0) (<= (+ (* 2 ~last_1_var_1_13~0) 1) (* ~last_1_var_1_13~0 ~last_1_var_1_13~0)))))) (or (and (not (= (mod ~var_1_7~0 256) 0)) .cse0 .cse1 .cse2 .cse3 (not (= (mod ~last_1_var_1_7~0 256) 0))) (and (= 256 ~last_1_var_1_13~0) .cse4 .cse1 .cse5 (= 256 ~var_1_13~0)) (and .cse0 .cse4 .cse1 .cse5 .cse2 .cse3)))) [2023-11-29 04:17:22,449 INFO L895 garLoopResultBuilder]: At program point L77-1(line 77) the Hoare annotation is: (let ((.cse6 (mod ~var_1_1~0 65536))) (let ((.cse0 (or (< 32767 .cse6) (= .cse6 ~var_1_13~0))) (.cse4 (= ~var_1_7~0 0)) (.cse1 (<= 1 (mod ~var_1_12~0 256))) (.cse5 (= ~last_1_var_1_7~0 0)) (.cse2 (or (< .cse6 32768) (= .cse6 (+ 65536 ~var_1_13~0)))) (.cse3 (or (= (mod ~last_1_var_1_13~0 65536) .cse6) (and (<= 0 ~last_1_var_1_13~0) (<= (+ (* 2 ~last_1_var_1_13~0) 1) (* ~last_1_var_1_13~0 ~last_1_var_1_13~0)))))) (or (and (not (= (mod ~var_1_7~0 256) 0)) .cse0 .cse1 .cse2 .cse3 (not (= (mod ~last_1_var_1_7~0 256) 0))) (and (= 256 ~last_1_var_1_13~0) .cse4 .cse1 .cse5 (= 256 ~var_1_13~0)) (and .cse0 .cse4 .cse1 .cse5 .cse2 .cse3)))) [2023-11-29 04:17:22,449 INFO L899 garLoopResultBuilder]: For program point L69(line 69) no Hoare annotation was computed. [2023-11-29 04:17:22,449 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 44) no Hoare annotation was computed. [2023-11-29 04:17:22,449 INFO L899 garLoopResultBuilder]: For program point L36-1(lines 35 59) no Hoare annotation was computed. [2023-11-29 04:17:22,449 INFO L895 garLoopResultBuilder]: At program point L65(line 65) the Hoare annotation is: (let ((.cse6 (mod ~var_1_1~0 65536))) (let ((.cse0 (or (< 32767 .cse6) (= .cse6 ~var_1_13~0))) (.cse4 (= ~var_1_7~0 0)) (.cse1 (<= 1 (mod ~var_1_12~0 256))) (.cse5 (= ~last_1_var_1_7~0 0)) (.cse2 (or (< .cse6 32768) (= .cse6 (+ 65536 ~var_1_13~0)))) (.cse3 (or (= (mod ~last_1_var_1_13~0 65536) .cse6) (and (<= 0 ~last_1_var_1_13~0) (<= (+ (* 2 ~last_1_var_1_13~0) 1) (* ~last_1_var_1_13~0 ~last_1_var_1_13~0)))))) (or (and (not (= (mod ~var_1_7~0 256) 0)) .cse0 .cse1 .cse2 .cse3 (not (= (mod ~last_1_var_1_7~0 256) 0))) (and (= 256 ~last_1_var_1_13~0) .cse4 .cse1 .cse5 (= 256 ~var_1_13~0)) (and .cse0 .cse4 .cse1 .cse5 .cse2 .cse3)))) [2023-11-29 04:17:22,449 INFO L895 garLoopResultBuilder]: At program point L65-1(line 65) the Hoare annotation is: (let ((.cse6 (mod ~var_1_1~0 65536))) (let ((.cse0 (or (< 32767 .cse6) (= .cse6 ~var_1_13~0))) (.cse4 (= ~var_1_7~0 0)) (.cse1 (<= 1 (mod ~var_1_12~0 256))) (.cse5 (= ~last_1_var_1_7~0 0)) (.cse2 (or (< .cse6 32768) (= .cse6 (+ 65536 ~var_1_13~0)))) (.cse3 (or (= (mod ~last_1_var_1_13~0 65536) .cse6) (and (<= 0 ~last_1_var_1_13~0) (<= (+ (* 2 ~last_1_var_1_13~0) 1) (* ~last_1_var_1_13~0 ~last_1_var_1_13~0)))))) (or (and (not (= (mod ~var_1_7~0 256) 0)) .cse0 .cse1 .cse2 .cse3 (not (= (mod ~last_1_var_1_7~0 256) 0))) (and (= 256 ~last_1_var_1_13~0) .cse4 .cse1 .cse5 (= 256 ~var_1_13~0)) (and .cse0 .cse4 .cse1 .cse5 .cse2 .cse3)))) [2023-11-29 04:17:22,449 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-11-29 04:17:22,450 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 55) no Hoare annotation was computed. [2023-11-29 04:17:22,450 INFO L899 garLoopResultBuilder]: For program point L78(lines 60 79) no Hoare annotation was computed. [2023-11-29 04:17:22,450 INFO L899 garLoopResultBuilder]: For program point L45(lines 35 59) no Hoare annotation was computed. [2023-11-29 04:17:22,450 INFO L895 garLoopResultBuilder]: At program point L74(line 74) the Hoare annotation is: (let ((.cse6 (mod ~var_1_1~0 65536))) (let ((.cse0 (or (< 32767 .cse6) (= .cse6 ~var_1_13~0))) (.cse4 (= ~var_1_7~0 0)) (.cse1 (<= 1 (mod ~var_1_12~0 256))) (.cse5 (= ~last_1_var_1_7~0 0)) (.cse2 (or (< .cse6 32768) (= .cse6 (+ 65536 ~var_1_13~0)))) (.cse3 (or (= (mod ~last_1_var_1_13~0 65536) .cse6) (and (<= 0 ~last_1_var_1_13~0) (<= (+ (* 2 ~last_1_var_1_13~0) 1) (* ~last_1_var_1_13~0 ~last_1_var_1_13~0)))))) (or (and (not (= (mod ~var_1_7~0 256) 0)) .cse0 .cse1 .cse2 .cse3 (not (= (mod ~last_1_var_1_7~0 256) 0))) (and (= 256 ~last_1_var_1_13~0) .cse4 .cse1 .cse5 (= 256 ~var_1_13~0)) (and .cse0 .cse4 .cse1 .cse5 .cse2 .cse3)))) [2023-11-29 04:17:22,450 INFO L895 garLoopResultBuilder]: At program point L74-1(line 74) the Hoare annotation is: (let ((.cse6 (mod ~var_1_1~0 65536))) (let ((.cse0 (or (< 32767 .cse6) (= .cse6 ~var_1_13~0))) (.cse4 (= ~var_1_7~0 0)) (.cse1 (<= 1 (mod ~var_1_12~0 256))) (.cse5 (= ~last_1_var_1_7~0 0)) (.cse2 (or (< .cse6 32768) (= .cse6 (+ 65536 ~var_1_13~0)))) (.cse3 (or (= (mod ~last_1_var_1_13~0 65536) .cse6) (and (<= 0 ~last_1_var_1_13~0) (<= (+ (* 2 ~last_1_var_1_13~0) 1) (* ~last_1_var_1_13~0 ~last_1_var_1_13~0)))))) (or (and (not (= (mod ~var_1_7~0 256) 0)) .cse0 .cse1 .cse2 .cse3 (not (= (mod ~last_1_var_1_7~0 256) 0))) (and (= 256 ~last_1_var_1_13~0) .cse4 .cse1 .cse5 (= 256 ~var_1_13~0)) (and .cse0 .cse4 .cse1 .cse5 .cse2 .cse3)))) [2023-11-29 04:17:22,450 INFO L899 garLoopResultBuilder]: For program point L37(lines 37 41) no Hoare annotation was computed. [2023-11-29 04:17:22,450 INFO L899 garLoopResultBuilder]: For program point L66(line 66) no Hoare annotation was computed. [2023-11-29 04:17:22,450 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 04:17:22,451 INFO L895 garLoopResultBuilder]: At program point L62(line 62) the Hoare annotation is: (let ((.cse6 (mod ~var_1_1~0 65536))) (let ((.cse0 (or (< 32767 .cse6) (= .cse6 ~var_1_13~0))) (.cse4 (= ~var_1_7~0 0)) (.cse1 (<= 1 (mod ~var_1_12~0 256))) (.cse5 (= ~last_1_var_1_7~0 0)) (.cse2 (or (< .cse6 32768) (= .cse6 (+ 65536 ~var_1_13~0)))) (.cse3 (or (= (mod ~last_1_var_1_13~0 65536) .cse6) (and (<= 0 ~last_1_var_1_13~0) (<= (+ (* 2 ~last_1_var_1_13~0) 1) (* ~last_1_var_1_13~0 ~last_1_var_1_13~0)))))) (or (and (not (= (mod ~var_1_7~0 256) 0)) .cse0 .cse1 .cse2 .cse3 (not (= (mod ~last_1_var_1_7~0 256) 0))) (and (= 256 ~last_1_var_1_13~0) .cse4 .cse1 .cse5 (= 256 ~var_1_13~0)) (and .cse0 .cse4 .cse1 .cse5 .cse2 .cse3)))) [2023-11-29 04:17:22,451 INFO L895 garLoopResultBuilder]: At program point L62-1(line 62) the Hoare annotation is: (let ((.cse6 (mod ~var_1_1~0 65536))) (let ((.cse0 (or (< 32767 .cse6) (= .cse6 ~var_1_13~0))) (.cse4 (= ~var_1_7~0 0)) (.cse1 (<= 1 (mod ~var_1_12~0 256))) (.cse5 (= ~last_1_var_1_7~0 0)) (.cse2 (or (< .cse6 32768) (= .cse6 (+ 65536 ~var_1_13~0)))) (.cse3 (or (= (mod ~last_1_var_1_13~0 65536) .cse6) (and (<= 0 ~last_1_var_1_13~0) (<= (+ (* 2 ~last_1_var_1_13~0) 1) (* ~last_1_var_1_13~0 ~last_1_var_1_13~0)))))) (or (and (not (= (mod ~var_1_7~0 256) 0)) .cse0 .cse1 .cse2 .cse3 (not (= (mod ~last_1_var_1_7~0 256) 0))) (and (= 256 ~last_1_var_1_13~0) .cse4 .cse1 .cse5 (= 256 ~var_1_13~0)) (and .cse0 .cse4 .cse1 .cse5 .cse2 .cse3)))) [2023-11-29 04:17:22,451 INFO L895 garLoopResultBuilder]: At program point L91-2(lines 91 97) the Hoare annotation is: (let ((.cse14 (mod ~var_1_1~0 65536))) (let ((.cse10 (= .cse14 ~var_1_13~0)) (.cse12 (* ~last_1_var_1_13~0 ~last_1_var_1_13~0)) (.cse11 (* 2 ~last_1_var_1_13~0))) (let ((.cse0 (not (= (mod ~var_1_7~0 256) 0))) (.cse6 (<= .cse12 .cse11)) (.cse9 (= ~var_1_1~0 ~last_1_var_1_13~0)) (.cse1 (or (< 32767 .cse14) .cse10)) (.cse7 (= ~var_1_7~0 0)) (.cse2 (<= 1 (mod ~var_1_12~0 256))) (.cse3 (or (< .cse14 32768) (= .cse14 (+ 65536 ~var_1_13~0)))) (.cse4 (or (< 0 (+ ~last_1_var_1_13~0 1)) (= (mod ~last_1_var_1_13~0 65536) .cse14))) (.cse8 (let ((.cse13 (+ ~var_1_10~0 1))) (or (< ~var_1_9~0 .cse13) (< ~var_1_8~0 .cse13)))) (.cse5 (<= (+ .cse11 1) .cse12))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse6 .cse7 .cse2 .cse8 .cse9 .cse10) (and (= 256 ~last_1_var_1_13~0) .cse7 .cse2 (= ~last_1_var_1_7~0 0) (= 256 ~var_1_13~0)) (and .cse0 .cse6 .cse2 .cse9 .cse10) (and .cse1 .cse7 .cse2 .cse3 .cse4 .cse8 .cse5))))) [2023-11-29 04:17:22,451 INFO L899 garLoopResultBuilder]: For program point L91-3(lines 91 97) no Hoare annotation was computed. [2023-11-29 04:17:22,451 INFO L899 garLoopResultBuilder]: For program point L46(lines 46 50) no Hoare annotation was computed. [2023-11-29 04:17:22,451 INFO L899 garLoopResultBuilder]: For program point L75(line 75) no Hoare annotation was computed. [2023-11-29 04:17:22,451 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 04:17:22,451 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (let ((.cse5 (mod ~var_1_1~0 65536))) (let ((.cse0 (= ~var_1_7~0 0)) (.cse1 (= ~last_1_var_1_7~0 0)) (.cse2 (or (< 32767 .cse5) (= .cse5 ~var_1_13~0))) (.cse3 (or (< .cse5 32768) (= .cse5 (+ 65536 ~var_1_13~0)))) (.cse4 (or (= (mod ~last_1_var_1_13~0 65536) .cse5) (and (<= 0 ~last_1_var_1_13~0) (<= (+ (* 2 ~last_1_var_1_13~0) 1) (* ~last_1_var_1_13~0 ~last_1_var_1_13~0)))))) (or (and (= 256 ~last_1_var_1_13~0) .cse0 .cse1 (= 256 ~var_1_13~0)) (and .cse2 .cse0 .cse1 .cse3 .cse4) (and (not (= (mod ~var_1_7~0 256) 0)) .cse2 .cse3 .cse4 (not (= (mod ~last_1_var_1_7~0 256) 0)))))) [2023-11-29 04:17:22,452 INFO L895 garLoopResultBuilder]: At program point L71-1(line 71) the Hoare annotation is: (let ((.cse6 (mod ~var_1_1~0 65536))) (let ((.cse0 (or (< 32767 .cse6) (= .cse6 ~var_1_13~0))) (.cse4 (= ~var_1_7~0 0)) (.cse1 (<= 1 (mod ~var_1_12~0 256))) (.cse5 (= ~last_1_var_1_7~0 0)) (.cse2 (or (< .cse6 32768) (= .cse6 (+ 65536 ~var_1_13~0)))) (.cse3 (or (= (mod ~last_1_var_1_13~0 65536) .cse6) (and (<= 0 ~last_1_var_1_13~0) (<= (+ (* 2 ~last_1_var_1_13~0) 1) (* ~last_1_var_1_13~0 ~last_1_var_1_13~0)))))) (or (and (not (= (mod ~var_1_7~0 256) 0)) .cse0 .cse1 .cse2 .cse3 (not (= (mod ~last_1_var_1_7~0 256) 0))) (and (= 256 ~last_1_var_1_13~0) .cse4 .cse1 .cse5 (= 256 ~var_1_13~0)) (and .cse0 .cse4 .cse1 .cse5 .cse2 .cse3)))) [2023-11-29 04:17:22,452 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 40) no Hoare annotation was computed. [2023-11-29 04:17:22,452 INFO L899 garLoopResultBuilder]: For program point L63(line 63) no Hoare annotation was computed. [2023-11-29 04:17:22,452 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2023-11-29 04:17:22,452 INFO L895 garLoopResultBuilder]: At program point L68(line 68) the Hoare annotation is: (let ((.cse6 (mod ~var_1_1~0 65536))) (let ((.cse0 (or (< 32767 .cse6) (= .cse6 ~var_1_13~0))) (.cse4 (= ~var_1_7~0 0)) (.cse1 (<= 1 (mod ~var_1_12~0 256))) (.cse5 (= ~last_1_var_1_7~0 0)) (.cse2 (or (< .cse6 32768) (= .cse6 (+ 65536 ~var_1_13~0)))) (.cse3 (or (= (mod ~last_1_var_1_13~0 65536) .cse6) (and (<= 0 ~last_1_var_1_13~0) (<= (+ (* 2 ~last_1_var_1_13~0) 1) (* ~last_1_var_1_13~0 ~last_1_var_1_13~0)))))) (or (and (not (= (mod ~var_1_7~0 256) 0)) .cse0 .cse1 .cse2 .cse3 (not (= (mod ~last_1_var_1_7~0 256) 0))) (and (= 256 ~last_1_var_1_13~0) .cse4 .cse1 .cse5 (= 256 ~var_1_13~0)) (and .cse0 .cse4 .cse1 .cse5 .cse2 .cse3)))) [2023-11-29 04:17:22,452 INFO L895 garLoopResultBuilder]: At program point L68-1(line 68) the Hoare annotation is: (let ((.cse6 (mod ~var_1_1~0 65536))) (let ((.cse0 (or (< 32767 .cse6) (= .cse6 ~var_1_13~0))) (.cse4 (= ~var_1_7~0 0)) (.cse1 (<= 1 (mod ~var_1_12~0 256))) (.cse5 (= ~last_1_var_1_7~0 0)) (.cse2 (or (< .cse6 32768) (= .cse6 (+ 65536 ~var_1_13~0)))) (.cse3 (or (= (mod ~last_1_var_1_13~0 65536) .cse6) (and (<= 0 ~last_1_var_1_13~0) (<= (+ (* 2 ~last_1_var_1_13~0) 1) (* ~last_1_var_1_13~0 ~last_1_var_1_13~0)))))) (or (and (not (= (mod ~var_1_7~0 256) 0)) .cse0 .cse1 .cse2 .cse3 (not (= (mod ~last_1_var_1_7~0 256) 0))) (and (= 256 ~last_1_var_1_13~0) .cse4 .cse1 .cse5 (= 256 ~var_1_13~0)) (and .cse0 .cse4 .cse1 .cse5 .cse2 .cse3)))) [2023-11-29 04:17:22,452 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 59) no Hoare annotation was computed. [2023-11-29 04:17:22,452 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 20) the Hoare annotation is: true [2023-11-29 04:17:22,452 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-11-29 04:17:22,453 INFO L899 garLoopResultBuilder]: For program point L20-2(line 20) no Hoare annotation was computed. [2023-11-29 04:17:22,453 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(line 20) no Hoare annotation was computed. [2023-11-29 04:17:22,455 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:17:22,457 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 04:17:22,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 04:17:22 BoogieIcfgContainer [2023-11-29 04:17:22,468 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 04:17:22,468 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 04:17:22,468 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 04:17:22,468 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 04:17:22,469 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:07:12" (3/4) ... [2023-11-29 04:17:22,470 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 04:17:22,473 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-29 04:17:22,477 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-29 04:17:22,478 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-29 04:17:22,478 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 04:17:22,478 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 04:17:22,567 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 04:17:22,568 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 04:17:22,568 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 04:17:22,569 INFO L158 Benchmark]: Toolchain (without parser) took 610775.33ms. Allocated memory was 165.7MB in the beginning and 1.1GB in the end (delta: 947.9MB). Free memory was 123.7MB in the beginning and 756.9MB in the end (delta: -633.2MB). Peak memory consumption was 317.9MB. Max. memory is 16.1GB. [2023-11-29 04:17:22,569 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 165.7MB. Free memory is still 138.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:17:22,570 INFO L158 Benchmark]: CACSL2BoogieTranslator took 237.15ms. Allocated memory is still 165.7MB. Free memory was 123.2MB in the beginning and 111.3MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 04:17:22,570 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.43ms. Allocated memory is still 165.7MB. Free memory was 111.3MB in the beginning and 109.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 04:17:22,571 INFO L158 Benchmark]: Boogie Preprocessor took 41.88ms. Allocated memory is still 165.7MB. Free memory was 109.0MB in the beginning and 106.0MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 04:17:22,571 INFO L158 Benchmark]: RCFGBuilder took 416.86ms. Allocated memory is still 165.7MB. Free memory was 105.5MB in the beginning and 89.3MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 04:17:22,571 INFO L158 Benchmark]: TraceAbstraction took 609935.07ms. Allocated memory was 165.7MB in the beginning and 1.1GB in the end (delta: 947.9MB). Free memory was 88.4MB in the beginning and 762.1MB in the end (delta: -673.7MB). Peak memory consumption was 643.1MB. Max. memory is 16.1GB. [2023-11-29 04:17:22,572 INFO L158 Benchmark]: Witness Printer took 99.81ms. Allocated memory is still 1.1GB. Free memory was 762.1MB in the beginning and 756.9MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 04:17:22,574 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 165.7MB. Free memory is still 138.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 237.15ms. Allocated memory is still 165.7MB. Free memory was 123.2MB in the beginning and 111.3MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.43ms. Allocated memory is still 165.7MB. Free memory was 111.3MB in the beginning and 109.0MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.88ms. Allocated memory is still 165.7MB. Free memory was 109.0MB in the beginning and 106.0MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 416.86ms. Allocated memory is still 165.7MB. Free memory was 105.5MB in the beginning and 89.3MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 609935.07ms. Allocated memory was 165.7MB in the beginning and 1.1GB in the end (delta: 947.9MB). Free memory was 88.4MB in the beginning and 762.1MB in the end (delta: -673.7MB). Peak memory consumption was 643.1MB. Max. memory is 16.1GB. * Witness Printer took 99.81ms. Allocated memory is still 1.1GB. Free memory was 762.1MB in the beginning and 756.9MB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 609.9s, OverallIterations: 13, TraceHistogramMax: 24, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 12.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 27.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 625 SdHoareTripleChecker+Valid, 8.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 619 mSDsluCounter, 2486 SdHoareTripleChecker+Invalid, 8.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1650 mSDsCounter, 189 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 873 IncrementalHoareTripleChecker+Invalid, 1062 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 189 mSolverCounterUnsat, 836 mSDtfsCounter, 873 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2060 GetRequests, 1963 SyntacticMatches, 7 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=293occurred in iteration=9, InterpolantAutomatonStates: 91, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 255 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 217 PreInvPairs, 286 NumberOfFragments, 1859 HoareAnnotationTreeSize, 217 FomulaSimplifications, 269996 FormulaSimplificationTreeSizeReduction, 4.6s HoareSimplificationTime, 14 FomulaSimplificationsInter, 9489 FormulaSimplificationTreeSizeReductionInter, 22.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 565.3s InterpolantComputationTime, 1589 NumberOfCodeBlocks, 1589 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2026 ConstructedInterpolants, 0 QuantifiedInterpolants, 4513 SizeOfPredicates, 120 NumberOfNonLiveVariables, 3517 ConjunctsInSsa, 154 ConjunctsInUnsatCore, 17 InterpolantComputations, 11 PerfectInterpolantSequences, 13016/13144 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 91]: Loop Invariant Derived loop invariant: (((((((((!(((var_1_7 % 256) == 0)) && ((32767 < (var_1_1 % 65536)) || ((var_1_1 % 65536) == var_1_13))) && (1 <= (var_1_12 % 256))) && (((var_1_1 % 65536) < 32768) || ((var_1_1 % 65536) == (65536 + var_1_13)))) && ((0 < (last_1_var_1_13 + 1)) || ((last_1_var_1_13 % 65536) == (var_1_1 % 65536)))) && (((2 * last_1_var_1_13) + 1) <= (last_1_var_1_13 * last_1_var_1_13))) || (((((((last_1_var_1_13 * last_1_var_1_13) <= (2 * last_1_var_1_13)) && (var_1_7 == 0)) && (1 <= (var_1_12 % 256))) && ((var_1_9 < (var_1_10 + 1)) || (var_1_8 < (var_1_10 + 1)))) && (var_1_1 == last_1_var_1_13)) && ((var_1_1 % 65536) == var_1_13))) || (((((256 == last_1_var_1_13) && (var_1_7 == 0)) && (1 <= (var_1_12 % 256))) && (last_1_var_1_7 == 0)) && (256 == var_1_13))) || ((((!(((var_1_7 % 256) == 0)) && ((last_1_var_1_13 * last_1_var_1_13) <= (2 * last_1_var_1_13))) && (1 <= (var_1_12 % 256))) && (var_1_1 == last_1_var_1_13)) && ((var_1_1 % 65536) == var_1_13))) || ((((((((32767 < (var_1_1 % 65536)) || ((var_1_1 % 65536) == var_1_13)) && (var_1_7 == 0)) && (1 <= (var_1_12 % 256))) && (((var_1_1 % 65536) < 32768) || ((var_1_1 % 65536) == (65536 + var_1_13)))) && ((0 < (last_1_var_1_13 + 1)) || ((last_1_var_1_13 % 65536) == (var_1_1 % 65536)))) && ((var_1_9 < (var_1_10 + 1)) || (var_1_8 < (var_1_10 + 1)))) && (((2 * last_1_var_1_13) + 1) <= (last_1_var_1_13 * last_1_var_1_13)))) RESULT: Ultimate proved your program to be correct! [2023-11-29 04:17:22,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_deee5165-f033-453a-973e-9df9d6ae78dd/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE