./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/indp3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/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_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/indp3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/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_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/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 e95db6aea8df845f112e7d303c04ce64867bd2e800c9279283322a7440e1498c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:23:15,961 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:23:16,028 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:23:16,032 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:23:16,033 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:23:16,057 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:23:16,057 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:23:16,058 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:23:16,059 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:23:16,059 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:23:16,060 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:23:16,060 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:23:16,061 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:23:16,062 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:23:16,062 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:23:16,063 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:23:16,063 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:23:16,064 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:23:16,064 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:23:16,065 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:23:16,065 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:23:16,066 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:23:16,066 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:23:16,067 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:23:16,067 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:23:16,068 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:23:16,068 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:23:16,069 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:23:16,069 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:23:16,069 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:23:16,070 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:23:16,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:23:16,071 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:23:16,071 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:23:16,071 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:23:16,071 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:23:16,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:23:16,072 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:23:16,072 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:23:16,072 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:23:16,072 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:23:16,073 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:23:16,073 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_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e95db6aea8df845f112e7d303c04ce64867bd2e800c9279283322a7440e1498c [2023-11-29 01:23:16,290 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:23:16,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:23:16,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:23:16,316 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:23:16,317 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:23:16,318 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/array-fpi/indp3.c [2023-11-29 01:23:19,053 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:23:19,225 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:23:19,226 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/sv-benchmarks/c/array-fpi/indp3.c [2023-11-29 01:23:19,234 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/data/e985e7ec8/a9b3d2b9271349a69ccaa944da0b0249/FLAG3fe752a87 [2023-11-29 01:23:19,250 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/data/e985e7ec8/a9b3d2b9271349a69ccaa944da0b0249 [2023-11-29 01:23:19,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:23:19,254 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:23:19,256 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:23:19,256 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:23:19,262 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:23:19,262 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:23:19" (1/1) ... [2023-11-29 01:23:19,263 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b1ee945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:19, skipping insertion in model container [2023-11-29 01:23:19,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:23:19" (1/1) ... [2023-11-29 01:23:19,286 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:23:19,443 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_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/sv-benchmarks/c/array-fpi/indp3.c[588,601] [2023-11-29 01:23:19,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:23:19,475 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:23:19,489 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_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/sv-benchmarks/c/array-fpi/indp3.c[588,601] [2023-11-29 01:23:19,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:23:19,513 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:23:19,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:19 WrapperNode [2023-11-29 01:23:19,514 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:23:19,515 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:23:19,515 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:23:19,515 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:23:19,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:19" (1/1) ... [2023-11-29 01:23:19,530 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:19" (1/1) ... [2023-11-29 01:23:19,553 INFO L138 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 93 [2023-11-29 01:23:19,554 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:23:19,554 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:23:19,554 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:23:19,555 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:23:19,567 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:19" (1/1) ... [2023-11-29 01:23:19,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:19" (1/1) ... [2023-11-29 01:23:19,569 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:19" (1/1) ... [2023-11-29 01:23:19,584 INFO L175 MemorySlicer]: Split 18 memory accesses to 3 slices as follows [2, 8, 8]. 44 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8, 0]. The 4 writes are split as follows [0, 0, 4]. [2023-11-29 01:23:19,584 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:19" (1/1) ... [2023-11-29 01:23:19,584 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:19" (1/1) ... [2023-11-29 01:23:19,590 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:19" (1/1) ... [2023-11-29 01:23:19,594 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:19" (1/1) ... [2023-11-29 01:23:19,596 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:19" (1/1) ... [2023-11-29 01:23:19,597 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:19" (1/1) ... [2023-11-29 01:23:19,600 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:23:19,601 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:23:19,601 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:23:19,601 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:23:19,602 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:19" (1/1) ... [2023-11-29 01:23:19,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:23:19,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:19,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:23:19,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:23:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:23:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:23:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:23:19,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:23:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:23:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:23:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:23:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:23:19,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:23:19,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:23:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:23:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:23:19,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:23:19,751 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:23:19,754 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:23:19,923 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:23:19,962 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:23:19,962 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-29 01:23:19,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:23:19 BoogieIcfgContainer [2023-11-29 01:23:19,963 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:23:19,966 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:23:19,966 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:23:19,970 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:23:19,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:23:19" (1/3) ... [2023-11-29 01:23:19,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727c6052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:23:19, skipping insertion in model container [2023-11-29 01:23:19,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:23:19" (2/3) ... [2023-11-29 01:23:19,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@727c6052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:23:19, skipping insertion in model container [2023-11-29 01:23:19,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:23:19" (3/3) ... [2023-11-29 01:23:19,973 INFO L112 eAbstractionObserver]: Analyzing ICFG indp3.c [2023-11-29 01:23:19,994 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:23:19,995 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:23:20,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:23:20,042 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;@3a8e6296, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:23:20,042 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:23:20,046 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 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 01:23:20,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 01:23:20,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:20,054 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:20,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:23:20,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:20,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1236622894, now seen corresponding path program 1 times [2023-11-29 01:23:20,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:20,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688252563] [2023-11-29 01:23:20,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:20,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:20,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:20,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688252563] [2023-11-29 01:23:20,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 01:23:20,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919398638] [2023-11-29 01:23:20,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:20,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:20,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:20,225 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:20,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:23:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:20,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 01:23:20,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:20,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:23:20,343 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:23:20,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919398638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:20,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:20,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:23:20,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541919766] [2023-11-29 01:23:20,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:20,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:23:20,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:20,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:23:20,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:23:20,384 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 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) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 01:23:20,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:20,416 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2023-11-29 01:23:20,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:23:20,419 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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) Word has length 15 [2023-11-29 01:23:20,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:20,426 INFO L225 Difference]: With dead ends: 37 [2023-11-29 01:23:20,426 INFO L226 Difference]: Without dead ends: 17 [2023-11-29 01:23:20,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:23:20,432 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:20,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:23:20,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-29 01:23:20,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-29 01:23:20,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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 01:23:20,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2023-11-29 01:23:20,463 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 15 [2023-11-29 01:23:20,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:20,464 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2023-11-29 01:23:20,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 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 01:23:20,464 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2023-11-29 01:23:20,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 01:23:20,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:20,509 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:20,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 01:23:20,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:20,710 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:23:20,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:20,711 INFO L85 PathProgramCache]: Analyzing trace with hash 644275754, now seen corresponding path program 1 times [2023-11-29 01:23:20,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:20,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759497700] [2023-11-29 01:23:20,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:20,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:20,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:20,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759497700] [2023-11-29 01:23:20,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 01:23:20,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099243152] [2023-11-29 01:23:20,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:20,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:20,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:20,757 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:20,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:23:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:20,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:23:20,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:20,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:23:20,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:23:20,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099243152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:23:20,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:23:20,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:23:20,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781129321] [2023-11-29 01:23:20,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:23:20,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:23:20,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:20,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:23:20,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:23:20,883 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 01:23:20,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:20,935 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2023-11-29 01:23:20,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:23:20,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) Word has length 15 [2023-11-29 01:23:20,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:20,937 INFO L225 Difference]: With dead ends: 38 [2023-11-29 01:23:20,937 INFO L226 Difference]: Without dead ends: 26 [2023-11-29 01:23:20,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:23:20,939 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:20,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 13 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:23:20,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-29 01:23:20,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2023-11-29 01:23:20,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 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 01:23:20,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-11-29 01:23:20,946 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 15 [2023-11-29 01:23:20,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:20,946 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-11-29 01:23:20,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 01:23:20,946 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-11-29 01:23:20,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 01:23:20,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:20,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:20,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:23:21,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:21,153 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:23:21,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:21,154 INFO L85 PathProgramCache]: Analyzing trace with hash -637777459, now seen corresponding path program 1 times [2023-11-29 01:23:21,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:21,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995006582] [2023-11-29 01:23:21,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:21,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:21,176 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:21,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753238735] [2023-11-29 01:23:21,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:21,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:21,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:21,178 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:21,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:23:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:23:21,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 01:23:21,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:21,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:23:21,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 01:23:21,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 01:23:21,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 01:23:21,477 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:23:21,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:23:21,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2023-11-29 01:23:21,893 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:23:21,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 103 [2023-11-29 01:23:21,972 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2023-11-29 01:23:21,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 47 [2023-11-29 01:23:22,009 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:23:22,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2023-11-29 01:23:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:23:22,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:22,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995006582] [2023-11-29 01:23:22,024 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:23:22,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753238735] [2023-11-29 01:23:22,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753238735] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:23:22,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:23:22,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2023-11-29 01:23:22,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496367373] [2023-11-29 01:23:22,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:23:22,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:23:22,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:22,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:23:22,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:23:22,028 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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 01:23:22,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:22,403 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2023-11-29 01:23:22,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:23:22,403 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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) Word has length 19 [2023-11-29 01:23:22,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:22,405 INFO L225 Difference]: With dead ends: 60 [2023-11-29 01:23:22,405 INFO L226 Difference]: Without dead ends: 58 [2023-11-29 01:23:22,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:23:22,408 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:22,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 80 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:23:22,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-11-29 01:23:22,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 38. [2023-11-29 01:23:22,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 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 01:23:22,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2023-11-29 01:23:22,420 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 19 [2023-11-29 01:23:22,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:22,421 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2023-11-29 01:23:22,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 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 01:23:22,421 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2023-11-29 01:23:22,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 01:23:22,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:22,422 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:22,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:23:22,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-29 01:23:22,623 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:23:22,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:22,624 INFO L85 PathProgramCache]: Analyzing trace with hash -977346611, now seen corresponding path program 2 times [2023-11-29 01:23:22,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:22,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633899492] [2023-11-29 01:23:22,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:22,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:22,642 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:22,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223983398] [2023-11-29 01:23:22,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:23:22,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:22,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:22,644 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:22,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:23:22,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:23:22,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:23:22,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:23:22,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:22,773 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:23:22,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:23:22,819 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:23:22,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:22,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633899492] [2023-11-29 01:23:22,820 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:23:22,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223983398] [2023-11-29 01:23:22,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223983398] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:23:22,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:23:22,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-11-29 01:23:22,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781663755] [2023-11-29 01:23:22,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:23:22,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:23:22,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:22,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:23:22,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:23:22,823 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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 01:23:22,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:22,984 INFO L93 Difference]: Finished difference Result 106 states and 134 transitions. [2023-11-29 01:23:22,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:23:22,985 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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) Word has length 21 [2023-11-29 01:23:22,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:22,986 INFO L225 Difference]: With dead ends: 106 [2023-11-29 01:23:22,986 INFO L226 Difference]: Without dead ends: 64 [2023-11-29 01:23:22,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:23:22,988 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 41 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:22,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 36 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:23:22,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-29 01:23:23,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 50. [2023-11-29 01:23:23,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 49 states have internal predecessors, (61), 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 01:23:23,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2023-11-29 01:23:23,001 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 21 [2023-11-29 01:23:23,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:23,002 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2023-11-29 01:23:23,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 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 01:23:23,002 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2023-11-29 01:23:23,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 01:23:23,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:23,003 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:23,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:23:23,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:23,208 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:23:23,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:23,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1312010675, now seen corresponding path program 3 times [2023-11-29 01:23:23,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:23,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144021520] [2023-11-29 01:23:23,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:23,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:23,226 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:23,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442372334] [2023-11-29 01:23:23,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:23:23,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:23,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:23,228 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:23,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:23:23,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 01:23:23,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:23:23,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 01:23:23,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:23,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 54 [2023-11-29 01:23:23,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 102 [2023-11-29 01:23:23,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 24 [2023-11-29 01:23:28,279 INFO L349 Elim1Store]: treesize reduction 98, result has 24.0 percent of original size [2023-11-29 01:23:28,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 93 treesize of output 91 [2023-11-29 01:23:32,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 01:23:32,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 01:23:32,800 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:23:32,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:23:33,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 60 [2023-11-29 01:23:33,838 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:23:33,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 119 [2023-11-29 01:23:33,897 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:23:33,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 62 [2023-11-29 01:23:34,006 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:23:34,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:34,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144021520] [2023-11-29 01:23:34,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:23:34,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442372334] [2023-11-29 01:23:34,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442372334] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:23:34,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:23:34,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2023-11-29 01:23:34,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524427800] [2023-11-29 01:23:34,007 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:23:34,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 01:23:34,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:34,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 01:23:34,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=442, Unknown=2, NotChecked=0, Total=552 [2023-11-29 01:23:34,010 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand has 24 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 24 states have internal predecessors, (38), 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 01:23:47,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:23:51,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:23:55,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:23:56,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:56,959 INFO L93 Difference]: Finished difference Result 79 states and 97 transitions. [2023-11-29 01:23:56,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 01:23:56,959 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 24 states have internal predecessors, (38), 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) Word has length 21 [2023-11-29 01:23:56,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:56,961 INFO L225 Difference]: With dead ends: 79 [2023-11-29 01:23:56,961 INFO L226 Difference]: Without dead ends: 62 [2023-11-29 01:23:56,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=356, Invalid=1362, Unknown=4, NotChecked=0, Total=1722 [2023-11-29 01:23:56,963 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 112 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 47 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:56,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 75 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 276 Invalid, 3 Unknown, 0 Unchecked, 13.2s Time] [2023-11-29 01:23:56,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-29 01:23:56,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2023-11-29 01:23:56,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.293103448275862) internal successors, (75), 58 states have internal predecessors, (75), 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 01:23:56,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2023-11-29 01:23:56,990 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 21 [2023-11-29 01:23:56,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:56,990 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2023-11-29 01:23:56,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 24 states have internal predecessors, (38), 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 01:23:56,990 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2023-11-29 01:23:56,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 01:23:56,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:56,992 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:56,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:23:57,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:57,192 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:23:57,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:57,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1536049632, now seen corresponding path program 4 times [2023-11-29 01:23:57,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:57,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58391242] [2023-11-29 01:23:57,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:57,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:57,214 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:57,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268493479] [2023-11-29 01:23:57,214 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:23:57,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:57,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:57,216 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:57,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:23:57,320 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:23:57,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:23:57,322 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:23:57,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:23:57,409 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:23:57,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:23:57,480 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:23:57,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:23:57,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58391242] [2023-11-29 01:23:57,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:23:57,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268493479] [2023-11-29 01:23:57,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268493479] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:23:57,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:23:57,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-11-29 01:23:57,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545327938] [2023-11-29 01:23:57,481 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:23:57,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:23:57,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:23:57,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:23:57,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:23:57,482 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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 01:23:57,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:23:57,737 INFO L93 Difference]: Finished difference Result 136 states and 166 transitions. [2023-11-29 01:23:57,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:23:57,738 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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) Word has length 24 [2023-11-29 01:23:57,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:23:57,739 INFO L225 Difference]: With dead ends: 136 [2023-11-29 01:23:57,739 INFO L226 Difference]: Without dead ends: 102 [2023-11-29 01:23:57,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:23:57,740 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 65 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:23:57,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 64 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:23:57,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-29 01:23:57,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 76. [2023-11-29 01:23:57,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.24) internal successors, (93), 75 states have internal predecessors, (93), 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 01:23:57,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2023-11-29 01:23:57,762 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 24 [2023-11-29 01:23:57,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:23:57,763 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2023-11-29 01:23:57,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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 01:23:57,763 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2023-11-29 01:23:57,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 01:23:57,764 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:23:57,765 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:23:57,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 01:23:57,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:57,968 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:23:57,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:23:57,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1678592018, now seen corresponding path program 5 times [2023-11-29 01:23:57,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:23:57,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698814000] [2023-11-29 01:23:57,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:23:57,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:23:57,981 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:23:57,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [927906916] [2023-11-29 01:23:57,981 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:23:57,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:23:57,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:23:57,983 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:23:57,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:24:00,946 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 01:24:00,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:24:00,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:24:00,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:01,009 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:24:01,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:24:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:24:01,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:01,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698814000] [2023-11-29 01:24:01,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:24:01,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927906916] [2023-11-29 01:24:01,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927906916] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:24:01,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:24:01,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-11-29 01:24:01,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662789575] [2023-11-29 01:24:01,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:24:01,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:24:01,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:01,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:24:01,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:24:01,057 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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 01:24:01,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:24:01,258 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2023-11-29 01:24:01,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:24:01,259 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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) Word has length 24 [2023-11-29 01:24:01,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:24:01,259 INFO L225 Difference]: With dead ends: 98 [2023-11-29 01:24:01,259 INFO L226 Difference]: Without dead ends: 75 [2023-11-29 01:24:01,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:24:01,261 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 67 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:24:01,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 68 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:24:01,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-29 01:24:01,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 47. [2023-11-29 01:24:01,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 46 states have internal predecessors, (52), 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 01:24:01,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2023-11-29 01:24:01,274 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 24 [2023-11-29 01:24:01,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:24:01,274 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2023-11-29 01:24:01,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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 01:24:01,274 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2023-11-29 01:24:01,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-29 01:24:01,275 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:24:01,275 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:24:01,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:24:01,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:01,476 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:24:01,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:01,476 INFO L85 PathProgramCache]: Analyzing trace with hash -920713769, now seen corresponding path program 1 times [2023-11-29 01:24:01,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:01,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223492965] [2023-11-29 01:24:01,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:01,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:01,490 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:24:01,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [728844606] [2023-11-29 01:24:01,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:01,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:01,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:01,491 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:01,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:24:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:01,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-29 01:24:01,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:01,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:24:01,689 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:01,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2023-11-29 01:24:01,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-11-29 01:24:01,730 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:01,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2023-11-29 01:24:01,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-11-29 01:24:01,781 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:01,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2023-11-29 01:24:01,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-11-29 01:24:01,869 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:01,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:24:02,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2023-11-29 01:24:02,921 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:02,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 103 [2023-11-29 01:24:03,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:03,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 54 [2023-11-29 01:24:03,018 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:03,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:03,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223492965] [2023-11-29 01:24:03,019 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:24:03,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728844606] [2023-11-29 01:24:03,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728844606] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:24:03,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:24:03,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 25 [2023-11-29 01:24:03,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635590391] [2023-11-29 01:24:03,019 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:24:03,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 01:24:03,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:03,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 01:24:03,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2023-11-29 01:24:03,021 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 25 states, 25 states have (on average 1.64) internal successors, (41), 25 states have internal predecessors, (41), 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 01:24:04,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:24:04,043 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2023-11-29 01:24:04,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 01:24:04,044 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.64) internal successors, (41), 25 states have internal predecessors, (41), 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) Word has length 26 [2023-11-29 01:24:04,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:24:04,045 INFO L225 Difference]: With dead ends: 59 [2023-11-29 01:24:04,045 INFO L226 Difference]: Without dead ends: 39 [2023-11-29 01:24:04,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=140, Invalid=916, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 01:24:04,046 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:24:04,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 144 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:24:04,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-29 01:24:04,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 29. [2023-11-29 01:24:04,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 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 01:24:04,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-11-29 01:24:04,058 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 26 [2023-11-29 01:24:04,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:24:04,058 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-11-29 01:24:04,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.64) internal successors, (41), 25 states have internal predecessors, (41), 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 01:24:04,058 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-11-29 01:24:04,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-29 01:24:04,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:24:04,059 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:24:04,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:24:04,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:04,266 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:24:04,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:04,266 INFO L85 PathProgramCache]: Analyzing trace with hash -2071804499, now seen corresponding path program 6 times [2023-11-29 01:24:04,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:04,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840989178] [2023-11-29 01:24:04,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:04,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:04,281 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:24:04,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1058677750] [2023-11-29 01:24:04,282 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 01:24:04,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:04,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:04,283 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:04,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:24:04,513 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 01:24:04,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:24:04,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 71 conjunts are in the unsatisfiable core [2023-11-29 01:24:04,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:04,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:24:04,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-29 01:24:04,610 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:04,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2023-11-29 01:24:04,703 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:04,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 35 [2023-11-29 01:24:04,746 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:04,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 26 [2023-11-29 01:24:04,812 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:04,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 14 [2023-11-29 01:24:04,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 01:24:04,876 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:04,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 22 [2023-11-29 01:24:04,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:04,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 22 [2023-11-29 01:24:05,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 01:24:05,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:05,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 22 [2023-11-29 01:24:05,086 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:05,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 22 [2023-11-29 01:24:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:05,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:24:12,352 WARN L293 SmtUtils]: Spent 5.46s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:24:13,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2023-11-29 01:24:13,714 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:13,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 103 [2023-11-29 01:24:13,874 INFO L349 Elim1Store]: treesize reduction 20, result has 54.5 percent of original size [2023-11-29 01:24:13,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 290 treesize of output 261 [2023-11-29 01:24:13,984 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:13,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 113 [2023-11-29 01:24:14,168 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:14,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:14,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840989178] [2023-11-29 01:24:14,169 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:24:14,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058677750] [2023-11-29 01:24:14,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058677750] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:24:14,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:24:14,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20] total 40 [2023-11-29 01:24:14,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760600325] [2023-11-29 01:24:14,169 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:24:14,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 01:24:14,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:14,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 01:24:14,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1276, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 01:24:14,172 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 40 states, 40 states have (on average 1.3) internal successors, (52), 40 states have internal predecessors, (52), 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 01:24:49,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:24:49,481 INFO L93 Difference]: Finished difference Result 203 states and 238 transitions. [2023-11-29 01:24:49,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-11-29 01:24:49,482 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.3) internal successors, (52), 40 states have internal predecessors, (52), 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) Word has length 27 [2023-11-29 01:24:49,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:24:49,483 INFO L225 Difference]: With dead ends: 203 [2023-11-29 01:24:49,484 INFO L226 Difference]: Without dead ends: 201 [2023-11-29 01:24:49,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4942 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=2547, Invalid=12953, Unknown=0, NotChecked=0, Total=15500 [2023-11-29 01:24:49,488 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 585 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:24:49,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 223 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2023-11-29 01:24:49,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-11-29 01:24:49,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 78. [2023-11-29 01:24:49,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.3506493506493507) internal successors, (104), 77 states have internal predecessors, (104), 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 01:24:49,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 104 transitions. [2023-11-29 01:24:49,534 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 104 transitions. Word has length 27 [2023-11-29 01:24:49,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:24:49,534 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 104 transitions. [2023-11-29 01:24:49,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.3) internal successors, (52), 40 states have internal predecessors, (52), 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 01:24:49,534 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 104 transitions. [2023-11-29 01:24:49,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 01:24:49,535 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:24:49,536 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:24:49,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:24:49,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:49,736 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:24:49,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:49,737 INFO L85 PathProgramCache]: Analyzing trace with hash -459150336, now seen corresponding path program 7 times [2023-11-29 01:24:49,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:49,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825881724] [2023-11-29 01:24:49,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:49,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:49,748 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:24:49,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1719138742] [2023-11-29 01:24:49,749 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 01:24:49,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:49,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:49,750 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:49,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:24:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:24:49,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:24:49,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:49,915 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 01:24:49,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:24:49,982 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 01:24:49,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:49,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825881724] [2023-11-29 01:24:49,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:24:49,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719138742] [2023-11-29 01:24:49,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719138742] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:24:49,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:24:49,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2023-11-29 01:24:49,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603570669] [2023-11-29 01:24:49,983 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:24:49,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:24:49,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:49,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:24:49,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:24:49,984 INFO L87 Difference]: Start difference. First operand 78 states and 104 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 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 01:24:50,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:24:50,249 INFO L93 Difference]: Finished difference Result 176 states and 223 transitions. [2023-11-29 01:24:50,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:24:50,250 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 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) Word has length 29 [2023-11-29 01:24:50,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:24:50,251 INFO L225 Difference]: With dead ends: 176 [2023-11-29 01:24:50,251 INFO L226 Difference]: Without dead ends: 124 [2023-11-29 01:24:50,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2023-11-29 01:24:50,253 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 100 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:24:50,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 62 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:24:50,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-29 01:24:50,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 85. [2023-11-29 01:24:50,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.2738095238095237) internal successors, (107), 84 states have internal predecessors, (107), 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 01:24:50,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2023-11-29 01:24:50,322 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 29 [2023-11-29 01:24:50,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:24:50,322 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2023-11-29 01:24:50,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 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 01:24:50,322 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2023-11-29 01:24:50,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-29 01:24:50,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:24:50,323 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:24:50,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:24:50,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:24:50,524 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:24:50,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:24:50,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1852472084, now seen corresponding path program 2 times [2023-11-29 01:24:50,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:24:50,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047169835] [2023-11-29 01:24:50,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:24:50,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:24:50,536 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:24:50,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759352456] [2023-11-29 01:24:50,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:24:50,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:24:50,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:24:50,537 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:24:50,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:24:50,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:24:50,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:24:50,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-29 01:24:50,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:24:50,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:24:50,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-11-29 01:24:50,881 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:50,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 32 [2023-11-29 01:24:50,901 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:50,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 25 [2023-11-29 01:24:50,920 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:50,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 16 [2023-11-29 01:24:50,948 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:50,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2023-11-29 01:24:50,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-11-29 01:24:50,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:50,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 24 [2023-11-29 01:24:51,025 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:51,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2023-11-29 01:24:51,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-11-29 01:24:51,067 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:51,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 24 [2023-11-29 01:24:51,100 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:51,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:24:53,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2023-11-29 01:24:53,977 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:53,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 103 [2023-11-29 01:24:54,100 INFO L349 Elim1Store]: treesize reduction 22, result has 54.2 percent of original size [2023-11-29 01:24:54,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 123 treesize of output 96 [2023-11-29 01:24:54,239 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:24:54,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 58 [2023-11-29 01:24:54,914 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:24:54,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:24:54,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047169835] [2023-11-29 01:24:54,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:24:54,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759352456] [2023-11-29 01:24:54,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759352456] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:24:54,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:24:54,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 35 [2023-11-29 01:24:54,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132077520] [2023-11-29 01:24:54,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:24:54,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 01:24:54,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:24:54,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 01:24:54,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1049, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 01:24:54,916 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 35 states have internal predecessors, (55), 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 01:25:00,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:25:00,713 INFO L93 Difference]: Finished difference Result 181 states and 217 transitions. [2023-11-29 01:25:00,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-29 01:25:00,713 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 35 states have internal predecessors, (55), 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) Word has length 30 [2023-11-29 01:25:00,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:25:00,714 INFO L225 Difference]: With dead ends: 181 [2023-11-29 01:25:00,714 INFO L226 Difference]: Without dead ends: 179 [2023-11-29 01:25:00,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=306, Invalid=2346, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 01:25:00,716 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 109 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:25:00,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 216 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 01:25:00,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-11-29 01:25:00,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 132. [2023-11-29 01:25:00,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.282442748091603) internal successors, (168), 131 states have internal predecessors, (168), 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 01:25:00,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 168 transitions. [2023-11-29 01:25:00,788 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 168 transitions. Word has length 30 [2023-11-29 01:25:00,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:25:00,788 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 168 transitions. [2023-11-29 01:25:00,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 35 states have internal predecessors, (55), 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 01:25:00,789 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 168 transitions. [2023-11-29 01:25:00,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-29 01:25:00,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:25:00,790 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:25:00,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:25:00,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 01:25:00,991 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:25:00,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:00,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1957626518, now seen corresponding path program 8 times [2023-11-29 01:25:00,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:00,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116055184] [2023-11-29 01:25:00,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:00,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:01,003 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:25:01,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2038033013] [2023-11-29 01:25:01,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:25:01,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:01,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:25:01,005 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:25:01,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:25:01,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:25:01,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:25:01,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 83 conjunts are in the unsatisfiable core [2023-11-29 01:25:01,411 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:01,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:25:01,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-29 01:25:01,474 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:25:01,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-11-29 01:25:01,504 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:25:01,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-11-29 01:25:01,578 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:25:01,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 41 [2023-11-29 01:25:01,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:25:01,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 34 [2023-11-29 01:25:01,649 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:25:01,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 24 [2023-11-29 01:25:01,675 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:25:01,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 14 [2023-11-29 01:25:01,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 01:25:01,727 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:25:01,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2023-11-29 01:25:01,757 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:25:01,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2023-11-29 01:25:01,781 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:25:01,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2023-11-29 01:25:01,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 01:25:01,823 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:25:01,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2023-11-29 01:25:01,848 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:25:01,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2023-11-29 01:25:01,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:25:01,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2023-11-29 01:25:01,944 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:25:01,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:25:10,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2023-11-29 01:25:10,145 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:25:10,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 103 [2023-11-29 01:25:10,236 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:25:10,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26061 treesize of output 25916 [2023-11-29 01:25:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:25:10,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:25:10,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116055184] [2023-11-29 01:25:10,655 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:25:10,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038033013] [2023-11-29 01:25:10,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038033013] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:25:10,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:25:10,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 42 [2023-11-29 01:25:10,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142335523] [2023-11-29 01:25:10,656 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:25:10,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 01:25:10,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:25:10,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 01:25:10,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1440, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 01:25:10,658 INFO L87 Difference]: Start difference. First operand 132 states and 168 transitions. Second operand has 42 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 42 states have internal predecessors, (60), 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 01:25:22,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:25:22,700 INFO L93 Difference]: Finished difference Result 258 states and 317 transitions. [2023-11-29 01:25:22,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-29 01:25:22,700 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 42 states have internal predecessors, (60), 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) Word has length 31 [2023-11-29 01:25:22,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:25:22,702 INFO L225 Difference]: With dead ends: 258 [2023-11-29 01:25:22,702 INFO L226 Difference]: Without dead ends: 256 [2023-11-29 01:25:22,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=576, Invalid=3206, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 01:25:22,704 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 193 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 982 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:25:22,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 332 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 982 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-11-29 01:25:22,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-29 01:25:22,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 167. [2023-11-29 01:25:22,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.3493975903614457) internal successors, (224), 166 states have internal predecessors, (224), 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 01:25:22,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 224 transitions. [2023-11-29 01:25:22,850 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 224 transitions. Word has length 31 [2023-11-29 01:25:22,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:25:22,850 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 224 transitions. [2023-11-29 01:25:22,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 42 states have internal predecessors, (60), 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 01:25:22,850 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 224 transitions. [2023-11-29 01:25:22,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-29 01:25:22,851 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:25:22,851 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:25:22,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:25:23,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 01:25:23,052 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:25:23,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:25:23,052 INFO L85 PathProgramCache]: Analyzing trace with hash 872588948, now seen corresponding path program 3 times [2023-11-29 01:25:23,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:25:23,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291231933] [2023-11-29 01:25:23,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:25:23,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:25:23,063 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:25:23,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565086097] [2023-11-29 01:25:23,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:25:23,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:25:23,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:25:23,065 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:25:23,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:25:23,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 01:25:23,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:25:23,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 82 conjunts are in the unsatisfiable core [2023-11-29 01:25:23,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:25:23,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 62 [2023-11-29 01:25:23,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 24 [2023-11-29 01:25:23,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2023-11-29 01:25:23,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 123 [2023-11-29 01:25:23,885 INFO L349 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-11-29 01:25:23,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 123 treesize of output 184 [2023-11-29 01:25:24,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:25:24,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 79 [2023-11-29 01:25:24,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 122 [2023-11-29 01:25:24,696 INFO L349 Elim1Store]: treesize reduction 104, result has 23.0 percent of original size [2023-11-29 01:25:24,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 129 treesize of output 141 [2023-11-29 01:25:25,003 INFO L349 Elim1Store]: treesize reduction 68, result has 51.1 percent of original size [2023-11-29 01:25:25,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 109 treesize of output 148 [2023-11-29 01:25:25,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 210 treesize of output 188 [2023-11-29 01:25:25,335 INFO L349 Elim1Store]: treesize reduction 210, result has 0.5 percent of original size [2023-11-29 01:25:25,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 188 treesize of output 239 [2023-11-29 01:25:25,520 INFO L349 Elim1Store]: treesize reduction 35, result has 40.7 percent of original size [2023-11-29 01:25:25,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 152 treesize of output 118 [2023-11-29 01:25:36,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1057 treesize of output 988 [2023-11-29 01:25:40,559 INFO L349 Elim1Store]: treesize reduction 1052, result has 11.4 percent of original size [2023-11-29 01:25:40,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 75 case distinctions, treesize of input 3669 treesize of output 3180 [2023-11-29 01:25:49,523 INFO L349 Elim1Store]: treesize reduction 26, result has 58.1 percent of original size [2023-11-29 01:25:49,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 121 treesize of output 131 [2023-11-29 01:25:53,771 INFO L349 Elim1Store]: treesize reduction 38, result has 48.6 percent of original size [2023-11-29 01:25:53,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 121 treesize of output 140 [2023-11-29 01:25:57,331 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:25:57,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2023-11-29 01:25:57,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-11-29 01:25:57,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 71 [2023-11-29 01:25:57,501 INFO L349 Elim1Store]: treesize reduction 39, result has 2.5 percent of original size [2023-11-29 01:25:57,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 71 treesize of output 123 [2023-11-29 01:25:57,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:25:57,574 INFO L349 Elim1Store]: treesize reduction 22, result has 50.0 percent of original size [2023-11-29 01:25:57,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 85 treesize of output 52 [2023-11-29 01:26:02,037 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:26:02,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:26:07,594 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 01:26:07,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:26:07,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291231933] [2023-11-29 01:26:07,594 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:26:07,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565086097] [2023-11-29 01:26:07,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565086097] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:26:07,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:26:07,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22] total 46 [2023-11-29 01:26:07,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610726400] [2023-11-29 01:26:07,595 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:26:07,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 01:26:07,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:26:07,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 01:26:07,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1788, Unknown=4, NotChecked=0, Total=2070 [2023-11-29 01:26:07,597 INFO L87 Difference]: Start difference. First operand 167 states and 224 transitions. Second operand has 46 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 46 states have internal predecessors, (60), 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 01:26:24,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:26:33,524 WARN L293 SmtUtils]: Spent 7.24s on a formula simplification. DAG size of input: 173 DAG size of output: 155 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:26:34,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:26:36,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:26:41,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:26:43,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:26:47,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:26:49,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:26:53,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:26:59,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:27:02,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:27:19,087 WARN L293 SmtUtils]: Spent 9.42s on a formula simplification. DAG size of input: 159 DAG size of output: 151 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 01:27:23,603 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse93 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296))) (let ((.cse54 (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (.cse92 (* .cse93 8))) (let ((.cse16 (select |c_#memory_int#2| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse98 (+ .cse92 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse59 (mod .cse54 4294967296))) (let ((.cse60 (* .cse59 8)) (.cse94 (select .cse16 .cse98))) (let ((.cse56 (store .cse16 .cse98 (+ .cse94 |c_ULTIMATE.start_main_~i~0#1|))) (.cse62 (+ .cse60 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse27 (mod (+ c_~N~0 4294967294) 4294967296)) (.cse95 (* c_~N~0 c_~N~0)) (.cse96 (mod (+ c_~N~0 4294967295) 4294967296))) (let ((.cse20 (= .cse96 1)) (.cse12 (* c_~N~0 6)) (.cse14 (+ 9 .cse95)) (.cse97 (* .cse27 8)) (.cse25 (= .cse27 1)) (.cse4 (store .cse56 .cse62 (+ |c_ULTIMATE.start_main_~i~0#1| (select .cse56 .cse62) 1))) (.cse3 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse53 (select .cse56 .cse3)) (.cse7 (< c_~N~0 2)) (.cse58 (select .cse4 .cse3)) (.cse6 (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (.cse21 (select .cse16 .cse3)) (.cse52 (not (= c_~N~0 3))) (.cse11 (+ 5 .cse95)) (.cse24 (+ .cse95 10)) (.cse23 (not .cse25)) (.cse13 (+ .cse97 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse19 (<= .cse27 2147483647)) (.cse40 (= (+ .cse12 (select .cse16 (+ .cse97 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)))) .cse14)) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 .cse96))) (.cse10 (* c_~N~0 4)) (.cse8 (+ .cse95 4)) (.cse26 (<= 2147483648 .cse27)) (.cse22 (not .cse20)) (.cse63 (* |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~i~0#1|))) (and (or (= (select (let ((.cse0 (let ((.cse2 (let ((.cse5 (+ (* 8 (mod .cse6 4294967296)) |c_ULTIMATE.start_main_~a~0#1.offset|))) (store .cse4 .cse5 (+ 2 (select .cse4 .cse5) |c_ULTIMATE.start_main_~i~0#1|))))) (store (store .cse2 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (- 1) (select .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse3 (+ (- 1) (select .cse2 .cse3)))))) (store .cse0 .cse1 (+ (- 1) (select .cse0 .cse1)))) .cse3) 1) (not (= (+ 3 |c_ULTIMATE.start_main_~i~0#1|) c_~N~0)) .cse7) (or (and (exists ((v_z_7 Int) (v_y_7 Int) (v_DerPreprocessor_30 Int)) (let ((.cse9 (let ((.cse18 (* v_z_7 8))) (let ((.cse17 (+ .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store (store .cse16 .cse17 v_DerPreprocessor_30) (+ .cse18 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) (select .cse16 .cse17))))) (.cse15 (+ (* v_y_7 4294967296) v_z_7 1))) (and (= .cse8 (+ (select .cse9 .cse1) .cse10)) (<= v_z_7 2147483647) (= (+ (select .cse9 .cse3) .cse10) .cse11) (= (+ .cse12 (select .cse9 .cse13)) .cse14) (<= .cse15 c_~N~0) (<= |c_ULTIMATE.start_main_~i~0#1| .cse15) (<= 0 v_z_7)))) .cse19) (and (or (= .cse8 (+ (select .cse16 .cse1) .cse10)) .cse20) (or (= .cse11 (+ .cse21 .cse10)) .cse22) (or (and (<= (+ (* (div (+ |c_ULTIMATE.start_main_~i~0#1| (- 4294967297)) 4294967296) 4294967296) 6442450945) c_~N~0) (or .cse23 (= .cse24 (+ .cse21 .cse12))) (or .cse25 (= .cse14 (+ (select .cse16 .cse13) .cse12)))) (and .cse26 (<= (+ (* (div (+ (- 2) (* (- 1) .cse27) |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 4294967296) 4294967297 .cse27) c_~N~0)))) (and (or (and (or (exists ((v_z_7 Int) (v_y_7 Int)) (let ((.cse31 (+ (* v_y_7 4294967296) v_z_7 1))) (and (exists ((v_DerPreprocessor_30 Int)) (let ((.cse28 (let ((.cse30 (* v_z_7 8))) (let ((.cse29 (+ .cse30 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store (store .cse16 .cse29 v_DerPreprocessor_30) (+ .cse30 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) (select .cse16 .cse29)))))) (and (= .cse8 (+ (select .cse28 .cse1) .cse10)) (= (+ .cse12 (select .cse28 .cse13)) .cse14) (= .cse24 (+ (select .cse28 .cse3) .cse12))))) (<= v_z_7 2147483647) (<= .cse31 c_~N~0) (<= |c_ULTIMATE.start_main_~i~0#1| .cse31) (<= 0 v_z_7)))) (and .cse23 (exists ((v_z_7 Int) (v_y_7 Int) (v_DerPreprocessor_30 Int)) (let ((.cse32 (let ((.cse35 (* v_z_7 8))) (let ((.cse34 (+ .cse35 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store (store .cse16 .cse34 v_DerPreprocessor_30) (+ .cse35 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) (select .cse16 .cse34))))) (.cse33 (+ (* v_y_7 4294967296) v_z_7 1))) (and (= .cse8 (+ (select .cse32 .cse1) .cse10)) (<= v_z_7 2147483647) (= (+ .cse12 (select .cse32 .cse13)) .cse14) (<= .cse33 c_~N~0) (<= |c_ULTIMATE.start_main_~i~0#1| .cse33) (<= 0 v_z_7))))) (and .cse25 (exists ((v_z_7 Int) (v_y_7 Int) (v_DerPreprocessor_30 Int)) (let ((.cse37 (+ (* v_y_7 4294967296) v_z_7 1)) (.cse36 (let ((.cse39 (* v_z_7 8))) (let ((.cse38 (+ .cse39 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store (store .cse16 .cse38 v_DerPreprocessor_30) (+ .cse39 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) (select .cse16 .cse38)))))) (and (= .cse8 (+ (select .cse36 .cse1) .cse10)) (<= v_z_7 2147483647) (<= .cse37 c_~N~0) (<= |c_ULTIMATE.start_main_~i~0#1| .cse37) (= .cse24 (+ (select .cse36 .cse3) .cse12)) (<= 0 v_z_7)))))) .cse19) (and .cse40 .cse26 (exists ((v_z_7 Int) (v_y_7 Int) (v_DerPreprocessor_30 Int)) (let ((.cse43 (+ (* v_y_7 4294967296) v_z_7 1))) (and (= .cse8 (+ (select (let ((.cse42 (* v_z_7 8))) (let ((.cse41 (+ .cse42 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store (store .cse16 .cse41 v_DerPreprocessor_30) (+ .cse42 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) (select .cse16 .cse41)))) .cse1) .cse10)) (<= v_z_7 2147483647) (<= .cse43 c_~N~0) (<= |c_ULTIMATE.start_main_~i~0#1| .cse43) (<= 0 v_z_7)))))) .cse22) (and .cse20 (exists ((v_z_7 Int) (v_y_7 Int) (v_DerPreprocessor_30 Int)) (let ((.cse44 (let ((.cse47 (* v_z_7 8))) (let ((.cse46 (+ .cse47 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store (store .cse16 .cse46 v_DerPreprocessor_30) (+ .cse47 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) (select .cse16 .cse46))))) (.cse45 (+ (* v_y_7 4294967296) v_z_7 1))) (and (<= v_z_7 2147483647) (= (+ (select .cse44 .cse3) .cse10) .cse11) (= (+ .cse12 (select .cse44 .cse13)) .cse14) (<= .cse45 c_~N~0) (<= |c_ULTIMATE.start_main_~i~0#1| .cse45) (<= 0 v_z_7))))) (and .cse40 .cse26 (exists ((v_z_7 Int) (v_y_7 Int) (v_DerPreprocessor_30 Int)) (let ((.cse48 (let ((.cse51 (* v_z_7 8))) (let ((.cse50 (+ .cse51 |c_ULTIMATE.start_main_~a~0#1.offset|))) (store (store .cse16 .cse50 v_DerPreprocessor_30) (+ .cse51 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368)) (select .cse16 .cse50))))) (.cse49 (+ (* v_y_7 4294967296) v_z_7 1))) (and (= .cse8 (+ (select .cse48 .cse1) .cse10)) (<= v_z_7 2147483647) (= (+ (select .cse48 .cse3) .cse10) .cse11) (<= .cse49 c_~N~0) (<= |c_ULTIMATE.start_main_~i~0#1| .cse49) (<= 0 v_z_7)))))) (or .cse52 (= .cse53 1)) (or (not (= .cse54 c_~N~0)) .cse7 (= (select (let ((.cse55 (store (store .cse56 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (- 1) (select .cse56 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse3 (+ (- 1) .cse53)))) (store .cse55 .cse1 (+ (- 1) (select .cse55 .cse1)))) .cse3) 1)) (<= (mod c_~N~0 4294967296) 536870911) (or (= (select (let ((.cse57 (store (store .cse4 |c_ULTIMATE.start_main_~a~0#1.offset| (+ (- 1) (select .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|))) .cse3 (+ (- 1) .cse58)))) (store .cse57 .cse1 (+ (- 1) (select .cse57 .cse1)))) .cse3) 1) .cse7 (not (= c_~N~0 .cse6))) (or (= .cse58 1) .cse52) (<= 1 c_~N~0) (or (let ((.cse61 (+ (* 2 |c_ULTIMATE.start_main_~i~0#1|) .cse63 1))) (and (or (< .cse59 2147483648) (= (select .cse16 (+ .cse60 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) .cse61)) (or (= (select .cse16 .cse62) .cse61) (< 2147483647 .cse59)))) (< c_~N~0 .cse6)) (or (= .cse21 0) .cse52 (not (= 2 |c_ULTIMATE.start_main_~i~0#1|))) (<= c_~N~0 2147483647) (let ((.cse68 (* c_~N~0 8))) (or (and (exists ((v_y_7 Int) (v_DerPreprocessor_30 Int)) (let ((.cse64 (let ((.cse67 (* v_y_7 (- 34359738368)))) (let ((.cse66 (+ .cse67 .cse68 |c_ULTIMATE.start_main_~a~0#1.offset| (- 8)))) (store (store .cse16 .cse66 v_DerPreprocessor_30) (+ .cse67 (- 34359738376) .cse68 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse16 .cse66))))) (.cse65 (* v_y_7 4294967296))) (and (= .cse11 (+ (select .cse64 .cse3) .cse10)) (= (+ (select .cse64 .cse13) .cse12) .cse14) (<= c_~N~0 (+ .cse65 2147483648)) (<= (+ .cse65 1) c_~N~0)))) .cse20) (and (exists ((v_y_7 Int) (v_DerPreprocessor_30 Int)) (let ((.cse69 (let ((.cse72 (* v_y_7 (- 34359738368)))) (let ((.cse71 (+ .cse72 .cse68 |c_ULTIMATE.start_main_~a~0#1.offset| (- 8)))) (store (store .cse16 .cse71 v_DerPreprocessor_30) (+ .cse72 (- 34359738376) .cse68 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse16 .cse71))))) (.cse70 (* v_y_7 4294967296))) (and (= .cse11 (+ (select .cse69 .cse3) .cse10)) (= (+ (select .cse69 .cse13) .cse12) .cse14) (<= c_~N~0 (+ .cse70 2147483648)) (= (+ (select .cse69 .cse1) .cse10) .cse8) (<= (+ .cse70 1) c_~N~0)))) .cse19) (and (exists ((v_y_7 Int) (v_DerPreprocessor_30 Int)) (let ((.cse73 (let ((.cse76 (* v_y_7 (- 34359738368)))) (let ((.cse75 (+ .cse76 .cse68 |c_ULTIMATE.start_main_~a~0#1.offset| (- 8)))) (store (store .cse16 .cse75 v_DerPreprocessor_30) (+ .cse76 (- 34359738376) .cse68 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse16 .cse75))))) (.cse74 (* v_y_7 4294967296))) (and (= .cse11 (+ (select .cse73 .cse3) .cse10)) (<= c_~N~0 (+ .cse74 2147483648)) (= (+ (select .cse73 .cse1) .cse10) .cse8) (<= (+ .cse74 1) c_~N~0)))) .cse40 .cse26) (and (or (and (or (exists ((v_y_7 Int) (v_DerPreprocessor_30 Int)) (let ((.cse78 (* v_y_7 4294967296)) (.cse77 (let ((.cse80 (* v_y_7 (- 34359738368)))) (let ((.cse79 (+ .cse80 .cse68 |c_ULTIMATE.start_main_~a~0#1.offset| (- 8)))) (store (store .cse16 .cse79 v_DerPreprocessor_30) (+ .cse80 (- 34359738376) .cse68 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse16 .cse79)))))) (and (= (+ (select .cse77 .cse13) .cse12) .cse14) (<= c_~N~0 (+ .cse78 2147483648)) (= (+ (select .cse77 .cse1) .cse10) .cse8) (<= (+ .cse78 1) c_~N~0) (= .cse24 (+ (select .cse77 .cse3) .cse12))))) (and .cse25 (exists ((v_y_7 Int) (v_DerPreprocessor_30 Int)) (let ((.cse81 (* v_y_7 4294967296)) (.cse82 (let ((.cse84 (* v_y_7 (- 34359738368)))) (let ((.cse83 (+ .cse84 .cse68 |c_ULTIMATE.start_main_~a~0#1.offset| (- 8)))) (store (store .cse16 .cse83 v_DerPreprocessor_30) (+ .cse84 (- 34359738376) .cse68 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse16 .cse83)))))) (and (<= c_~N~0 (+ .cse81 2147483648)) (= (+ (select .cse82 .cse1) .cse10) .cse8) (<= (+ .cse81 1) c_~N~0) (= .cse24 (+ (select .cse82 .cse3) .cse12)))))) (and .cse23 (exists ((v_y_7 Int) (v_DerPreprocessor_30 Int)) (let ((.cse85 (let ((.cse88 (* v_y_7 (- 34359738368)))) (let ((.cse87 (+ .cse88 .cse68 |c_ULTIMATE.start_main_~a~0#1.offset| (- 8)))) (store (store .cse16 .cse87 v_DerPreprocessor_30) (+ .cse88 (- 34359738376) .cse68 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse16 .cse87))))) (.cse86 (* v_y_7 4294967296))) (and (= (+ (select .cse85 .cse13) .cse12) .cse14) (<= c_~N~0 (+ .cse86 2147483648)) (= (+ (select .cse85 .cse1) .cse10) .cse8) (<= (+ .cse86 1) c_~N~0)))))) .cse19) (and .cse40 (exists ((v_y_7 Int) (v_DerPreprocessor_30 Int)) (let ((.cse89 (* v_y_7 4294967296))) (and (<= c_~N~0 (+ .cse89 2147483648)) (= (+ (select (let ((.cse91 (* v_y_7 (- 34359738368)))) (let ((.cse90 (+ .cse91 .cse68 |c_ULTIMATE.start_main_~a~0#1.offset| (- 8)))) (store (store .cse16 .cse90 v_DerPreprocessor_30) (+ .cse91 (- 34359738376) .cse68 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse16 .cse90)))) .cse1) .cse10) .cse8) (<= (+ .cse89 1) c_~N~0)))) .cse26)) .cse22))) (or (< c_~N~0 .cse54) (and (or (= (select .cse16 (+ .cse92 |c_ULTIMATE.start_main_~a~0#1.offset| (- 34359738368))) .cse63) (< .cse93 2147483648)) (or (< 2147483647 .cse93) (= .cse94 .cse63)))))))))))) is different from false [2023-11-29 01:27:27,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:27:32,384 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:27:37,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:27:41,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:27:44,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:27:48,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:27:55,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:27:58,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:28:07,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:28:14,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:28:23,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-29 01:28:48,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:48,898 INFO L93 Difference]: Finished difference Result 340 states and 429 transitions. [2023-11-29 01:28:48,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-29 01:28:48,898 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 46 states have internal predecessors, (60), 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) Word has length 32 [2023-11-29 01:28:48,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:48,900 INFO L225 Difference]: With dead ends: 340 [2023-11-29 01:28:48,900 INFO L226 Difference]: Without dead ends: 313 [2023-11-29 01:28:48,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1999 ImplicationChecksByTransitivity, 102.4s TimeCoverageRelationStatistics Valid=1291, Invalid=6539, Unknown=6, NotChecked=174, Total=8010 [2023-11-29 01:28:48,904 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 401 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 274 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 92.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:48,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 316 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1114 Invalid, 5 Unknown, 43 Unchecked, 92.1s Time] [2023-11-29 01:28:48,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-11-29 01:28:49,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 177. [2023-11-29 01:28:49,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.3295454545454546) internal successors, (234), 176 states have internal predecessors, (234), 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 01:28:49,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 234 transitions. [2023-11-29 01:28:49,074 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 234 transitions. Word has length 32 [2023-11-29 01:28:49,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:49,074 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 234 transitions. [2023-11-29 01:28:49,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 46 states have internal predecessors, (60), 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 01:28:49,075 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 234 transitions. [2023-11-29 01:28:49,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 01:28:49,076 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:49,076 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:49,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 01:28:49,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:28:49,276 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:49,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:49,277 INFO L85 PathProgramCache]: Analyzing trace with hash 966359117, now seen corresponding path program 4 times [2023-11-29 01:28:49,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:49,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113559451] [2023-11-29 01:28:49,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:49,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:49,289 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:49,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762175121] [2023-11-29 01:28:49,289 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:28:49,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:49,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:49,290 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:49,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:28:49,565 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:28:49,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:28:49,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-29 01:28:49,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:28:49,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 01:28:49,631 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:28:49,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2023-11-29 01:28:49,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 01:28:49,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 01:28:49,702 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:28:49,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2023-11-29 01:28:49,722 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:28:49,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2023-11-29 01:28:49,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 01:28:49,782 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:28:49,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2023-11-29 01:28:49,803 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:28:49,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2023-11-29 01:28:49,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 01:28:49,929 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:28:49,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:28:53,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2023-11-29 01:28:53,045 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:28:53,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 103 [2023-11-29 01:28:53,261 INFO L349 Elim1Store]: treesize reduction 23, result has 39.5 percent of original size [2023-11-29 01:28:53,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 45 [2023-11-29 01:28:53,380 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:28:53,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 26 [2023-11-29 01:28:53,789 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:28:53,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:28:53,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113559451] [2023-11-29 01:28:53,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:28:53,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762175121] [2023-11-29 01:28:53,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762175121] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:28:53,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:28:53,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 42 [2023-11-29 01:28:53,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856272298] [2023-11-29 01:28:53,790 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:28:53,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 01:28:53,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:28:53,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 01:28:53,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1557, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 01:28:53,792 INFO L87 Difference]: Start difference. First operand 177 states and 234 transitions. Second operand has 42 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 42 states have internal predecessors, (62), 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 01:28:58,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:28:58,114 INFO L93 Difference]: Finished difference Result 215 states and 271 transitions. [2023-11-29 01:28:58,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 01:28:58,115 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 42 states have internal predecessors, (62), 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) Word has length 33 [2023-11-29 01:28:58,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:28:58,116 INFO L225 Difference]: With dead ends: 215 [2023-11-29 01:28:58,116 INFO L226 Difference]: Without dead ends: 189 [2023-11-29 01:28:58,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=232, Invalid=2318, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 01:28:58,117 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 26 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:28:58,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 363 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 01:28:58,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-29 01:28:58,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 172. [2023-11-29 01:28:58,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.3333333333333333) internal successors, (228), 171 states have internal predecessors, (228), 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 01:28:58,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 228 transitions. [2023-11-29 01:28:58,256 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 228 transitions. Word has length 33 [2023-11-29 01:28:58,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:28:58,256 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 228 transitions. [2023-11-29 01:28:58,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.4761904761904763) internal successors, (62), 42 states have internal predecessors, (62), 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 01:28:58,256 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 228 transitions. [2023-11-29 01:28:58,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-29 01:28:58,257 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:28:58,257 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:28:58,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-29 01:28:58,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 01:28:58,458 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:28:58,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:28:58,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1680676495, now seen corresponding path program 5 times [2023-11-29 01:28:58,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:28:58,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263951832] [2023-11-29 01:28:58,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:28:58,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:28:58,468 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:28:58,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1961383975] [2023-11-29 01:28:58,468 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 01:28:58,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:28:58,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:28:58,469 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:28:58,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbfb70b2-7b5c-4985-a9bf-790c2c683db9/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process