./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/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_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/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 64bit --witnessprinter.graph.data.programhash 875156c3731c0a5bf4c4c8e31515b41d84546cbf12ddfa7ae901dd39a126b063 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:46:41,894 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:46:41,959 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 02:46:41,964 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:46:41,965 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:46:41,991 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:46:41,992 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:46:41,992 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:46:41,993 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:46:41,994 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:46:41,994 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:46:41,995 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:46:41,996 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:46:41,996 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:46:41,996 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:46:41,997 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:46:41,998 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:46:41,998 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 02:46:41,998 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:46:41,999 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:46:42,000 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:46:42,000 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:46:42,001 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:46:42,001 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:46:42,002 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:46:42,002 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:46:42,003 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:46:42,003 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:46:42,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:46:42,004 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:46:42,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:46:42,004 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:46:42,005 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 02:46:42,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 02:46:42,005 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:46:42,005 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:46:42,006 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:46:42,006 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:46:42,006 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:46:42,006 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_ab77b716-1793-421f-a25d-7a52608a84f2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 875156c3731c0a5bf4c4c8e31515b41d84546cbf12ddfa7ae901dd39a126b063 [2023-11-29 02:46:42,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:46:42,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:46:42,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:46:42,282 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:46:42,283 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:46:42,284 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-back-serstep.c [2023-11-29 02:46:45,092 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:46:45,315 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:46:45,315 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-back-serstep.c [2023-11-29 02:46:45,330 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/data/26cafc5b2/dc60354c4699435e9a1ad8fbdea72d07/FLAGdbe972d93 [2023-11-29 02:46:45,345 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/data/26cafc5b2/dc60354c4699435e9a1ad8fbdea72d07 [2023-11-29 02:46:45,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:46:45,349 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:46:45,350 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:46:45,350 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:46:45,355 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:46:45,356 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:46:45" (1/1) ... [2023-11-29 02:46:45,356 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4572f94f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:46:45, skipping insertion in model container [2023-11-29 02:46:45,357 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:46:45" (1/1) ... [2023-11-29 02:46:45,414 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:46:45,580 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_ab77b716-1793-421f-a25d-7a52608a84f2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-back-serstep.c[1172,1185] [2023-11-29 02:46:45,826 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:46:45,836 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:46:45,849 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_ab77b716-1793-421f-a25d-7a52608a84f2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-back-serstep.c[1172,1185] [2023-11-29 02:46:45,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:46:45,978 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:46:45,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:46:45 WrapperNode [2023-11-29 02:46:45,979 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:46:45,979 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:46:45,979 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:46:45,980 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:46:45,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:46:45" (1/1) ... [2023-11-29 02:46:46,021 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:46:45" (1/1) ... [2023-11-29 02:46:46,320 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 3168 [2023-11-29 02:46:46,320 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:46:46,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:46:46,321 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:46:46,321 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:46:46,333 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:46:45" (1/1) ... [2023-11-29 02:46:46,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:46:45" (1/1) ... [2023-11-29 02:46:46,385 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:46:45" (1/1) ... [2023-11-29 02:46:46,496 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 02:46:46,497 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:46:45" (1/1) ... [2023-11-29 02:46:46,497 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:46:45" (1/1) ... [2023-11-29 02:46:46,553 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:46:45" (1/1) ... [2023-11-29 02:46:46,573 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:46:45" (1/1) ... [2023-11-29 02:46:46,588 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:46:45" (1/1) ... [2023-11-29 02:46:46,602 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:46:45" (1/1) ... [2023-11-29 02:46:46,659 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:46:46,660 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:46:46,660 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:46:46,660 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:46:46,661 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:46:45" (1/1) ... [2023-11-29 02:46:46,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:46:46,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:46:46,691 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:46:46,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:46:46,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:46:46,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 02:46:46,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:46:46,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:46:47,028 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:46:47,031 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:46:49,258 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:46:49,344 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:46:49,344 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:46:49,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:46:49 BoogieIcfgContainer [2023-11-29 02:46:49,345 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:46:49,347 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:46:49,347 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:46:49,350 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:46:49,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:46:45" (1/3) ... [2023-11-29 02:46:49,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78cc0f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:46:49, skipping insertion in model container [2023-11-29 02:46:49,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:46:45" (2/3) ... [2023-11-29 02:46:49,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78cc0f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:46:49, skipping insertion in model container [2023-11-29 02:46:49,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:46:49" (3/3) ... [2023-11-29 02:46:49,353 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.loyd.1.prop1-back-serstep.c [2023-11-29 02:46:49,372 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:46:49,372 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:46:49,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:46:49,443 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;@997c148, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:46:49,443 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:46:49,451 INFO L276 IsEmpty]: Start isEmpty. Operand has 614 states, 612 states have (on average 1.6666666666666667) internal successors, (1020), 613 states have internal predecessors, (1020), 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 02:46:49,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 02:46:49,462 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:46:49,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:46:49,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:46:49,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:46:49,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1682477958, now seen corresponding path program 1 times [2023-11-29 02:46:49,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:46:49,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318170420] [2023-11-29 02:46:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:46:49,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:46:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:46:50,227 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 02:46:50,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:46:50,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318170420] [2023-11-29 02:46:50,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318170420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:46:50,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:46:50,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:46:50,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665818994] [2023-11-29 02:46:50,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:46:50,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:46:50,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:46:50,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:46:50,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:46:50,270 INFO L87 Difference]: Start difference. First operand has 614 states, 612 states have (on average 1.6666666666666667) internal successors, (1020), 613 states have internal predecessors, (1020), 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 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 02:46:50,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:46:50,374 INFO L93 Difference]: Finished difference Result 1188 states and 1976 transitions. [2023-11-29 02:46:50,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:46:50,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 86 [2023-11-29 02:46:50,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:46:50,394 INFO L225 Difference]: With dead ends: 1188 [2023-11-29 02:46:50,394 INFO L226 Difference]: Without dead ends: 614 [2023-11-29 02:46:50,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:46:50,403 INFO L413 NwaCegarLoop]: 1013 mSDtfsCounter, 1 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3034 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:46:50,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3034 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:46:50,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2023-11-29 02:46:50,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2023-11-29 02:46:50,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 1.6606851549755302) internal successors, (1018), 613 states have internal predecessors, (1018), 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 02:46:50,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1018 transitions. [2023-11-29 02:46:50,474 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1018 transitions. Word has length 86 [2023-11-29 02:46:50,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:46:50,475 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 1018 transitions. [2023-11-29 02:46:50,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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 02:46:50,475 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1018 transitions. [2023-11-29 02:46:50,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-29 02:46:50,479 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:46:50,479 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:46:50,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 02:46:50,480 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:46:50,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:46:50,481 INFO L85 PathProgramCache]: Analyzing trace with hash -615483706, now seen corresponding path program 1 times [2023-11-29 02:46:50,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:46:50,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455247029] [2023-11-29 02:46:50,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:46:50,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:46:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:46:50,767 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 02:46:50,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:46:50,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455247029] [2023-11-29 02:46:50,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455247029] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:46:50,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:46:50,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:46:50,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279260543] [2023-11-29 02:46:50,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:46:50,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:46:50,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:46:50,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:46:50,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:46:50,771 INFO L87 Difference]: Start difference. First operand 614 states and 1018 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 02:46:50,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:46:50,826 INFO L93 Difference]: Finished difference Result 1191 states and 1974 transitions. [2023-11-29 02:46:50,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:46:50,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 87 [2023-11-29 02:46:50,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:46:50,831 INFO L225 Difference]: With dead ends: 1191 [2023-11-29 02:46:50,831 INFO L226 Difference]: Without dead ends: 617 [2023-11-29 02:46:50,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:46:50,834 INFO L413 NwaCegarLoop]: 1013 mSDtfsCounter, 1 mSDsluCounter, 2019 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3032 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:46:50,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3032 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:46:50,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-11-29 02:46:50,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 616. [2023-11-29 02:46:50,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 1.6585365853658536) internal successors, (1020), 615 states have internal predecessors, (1020), 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 02:46:50,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 1020 transitions. [2023-11-29 02:46:50,856 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 1020 transitions. Word has length 87 [2023-11-29 02:46:50,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:46:50,857 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 1020 transitions. [2023-11-29 02:46:50,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 02:46:50,857 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 1020 transitions. [2023-11-29 02:46:50,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-29 02:46:50,859 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:46:50,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:46:50,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 02:46:50,860 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:46:50,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:46:50,861 INFO L85 PathProgramCache]: Analyzing trace with hash -2110557676, now seen corresponding path program 1 times [2023-11-29 02:46:50,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:46:50,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281767861] [2023-11-29 02:46:50,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:46:50,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:46:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:46:51,113 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 02:46:51,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:46:51,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281767861] [2023-11-29 02:46:51,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281767861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:46:51,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:46:51,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:46:51,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224830150] [2023-11-29 02:46:51,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:46:51,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:46:51,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:46:51,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:46:51,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:46:51,117 INFO L87 Difference]: Start difference. First operand 616 states and 1020 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 02:46:51,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:46:51,202 INFO L93 Difference]: Finished difference Result 1762 states and 2919 transitions. [2023-11-29 02:46:51,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 02:46:51,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 88 [2023-11-29 02:46:51,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:46:51,210 INFO L225 Difference]: With dead ends: 1762 [2023-11-29 02:46:51,210 INFO L226 Difference]: Without dead ends: 1186 [2023-11-29 02:46:51,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:46:51,213 INFO L413 NwaCegarLoop]: 1143 mSDtfsCounter, 941 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 3290 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:46:51,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 3290 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:46:51,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2023-11-29 02:46:51,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 618. [2023-11-29 02:46:51,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 617 states have (on average 1.6564019448946516) internal successors, (1022), 617 states have internal predecessors, (1022), 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 02:46:51,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 1022 transitions. [2023-11-29 02:46:51,235 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 1022 transitions. Word has length 88 [2023-11-29 02:46:51,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:46:51,235 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 1022 transitions. [2023-11-29 02:46:51,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 02:46:51,236 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 1022 transitions. [2023-11-29 02:46:51,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-29 02:46:51,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:46:51,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:46:51,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 02:46:51,238 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:46:51,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:46:51,238 INFO L85 PathProgramCache]: Analyzing trace with hash 597128748, now seen corresponding path program 1 times [2023-11-29 02:46:51,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:46:51,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65531049] [2023-11-29 02:46:51,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:46:51,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:46:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:46:51,694 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 02:46:51,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:46:51,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65531049] [2023-11-29 02:46:51,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65531049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:46:51,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:46:51,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 02:46:51,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320111570] [2023-11-29 02:46:51,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:46:51,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:46:51,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:46:51,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:46:51,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:46:51,698 INFO L87 Difference]: Start difference. First operand 618 states and 1022 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 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 02:46:51,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:46:51,852 INFO L93 Difference]: Finished difference Result 1846 states and 3055 transitions. [2023-11-29 02:46:51,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:46:51,853 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 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 89 [2023-11-29 02:46:51,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:46:51,860 INFO L225 Difference]: With dead ends: 1846 [2023-11-29 02:46:51,861 INFO L226 Difference]: Without dead ends: 1268 [2023-11-29 02:46:51,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 02:46:51,863 INFO L413 NwaCegarLoop]: 1142 mSDtfsCounter, 3892 mSDsluCounter, 3158 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3892 SdHoareTripleChecker+Valid, 4300 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:46:51,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3892 Valid, 4300 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:46:51,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2023-11-29 02:46:51,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 696. [2023-11-29 02:46:51,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 695 states have (on average 1.6575539568345323) internal successors, (1152), 695 states have internal predecessors, (1152), 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 02:46:51,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1152 transitions. [2023-11-29 02:46:51,887 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1152 transitions. Word has length 89 [2023-11-29 02:46:51,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:46:51,888 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 1152 transitions. [2023-11-29 02:46:51,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 5 states have internal predecessors, (89), 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 02:46:51,888 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1152 transitions. [2023-11-29 02:46:51,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2023-11-29 02:46:51,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:46:51,899 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:46:51,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 02:46:51,899 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:46:51,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:46:51,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1496632709, now seen corresponding path program 1 times [2023-11-29 02:46:51,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:46:51,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818733653] [2023-11-29 02:46:51,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:46:51,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:46:52,030 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:46:52,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432634192] [2023-11-29 02:46:52,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:46:52,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:46:52,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:46:52,034 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:46:52,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 02:46:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:46:52,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 3046 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 02:46:53,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:46:53,192 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 37 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 02:46:53,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:46:53,270 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 02:46:53,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:46:53,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818733653] [2023-11-29 02:46:53,271 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:46:53,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432634192] [2023-11-29 02:46:53,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432634192] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:46:53,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:46:53,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 02:46:53,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847946325] [2023-11-29 02:46:53,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:46:53,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:46:53,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:46:53,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:46:53,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:46:53,275 INFO L87 Difference]: Start difference. First operand 696 states and 1152 transitions. Second operand has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 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 02:46:54,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:46:54,307 INFO L93 Difference]: Finished difference Result 2373 states and 3913 transitions. [2023-11-29 02:46:54,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:46:54,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 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 470 [2023-11-29 02:46:54,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:46:54,317 INFO L225 Difference]: With dead ends: 2373 [2023-11-29 02:46:54,317 INFO L226 Difference]: Without dead ends: 1267 [2023-11-29 02:46:54,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 939 GetRequests, 930 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:46:54,320 INFO L413 NwaCegarLoop]: 1707 mSDtfsCounter, 1739 mSDsluCounter, 2592 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 4299 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:46:54,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1739 Valid, 4299 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 02:46:54,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2023-11-29 02:46:54,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 698. [2023-11-29 02:46:54,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 697 states have (on average 1.6556671449067433) internal successors, (1154), 697 states have internal predecessors, (1154), 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 02:46:54,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1154 transitions. [2023-11-29 02:46:54,346 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1154 transitions. Word has length 470 [2023-11-29 02:46:54,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:46:54,347 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 1154 transitions. [2023-11-29 02:46:54,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 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 02:46:54,348 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1154 transitions. [2023-11-29 02:46:54,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2023-11-29 02:46:54,357 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:46:54,358 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:46:54,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:46:54,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:46:54,558 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:46:54,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:46:54,559 INFO L85 PathProgramCache]: Analyzing trace with hash 75978359, now seen corresponding path program 1 times [2023-11-29 02:46:54,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:46:54,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642593317] [2023-11-29 02:46:54,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:46:54,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:46:54,662 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:46:54,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1865015060] [2023-11-29 02:46:54,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:46:54,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:46:54,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:46:54,665 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:46:54,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 02:46:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:46:55,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 3050 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 02:46:55,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:46:55,629 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 02:46:55,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:46:55,704 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-29 02:46:55,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:46:55,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642593317] [2023-11-29 02:46:55,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:46:55,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865015060] [2023-11-29 02:46:55,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865015060] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:46:55,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:46:55,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 02:46:55,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454010552] [2023-11-29 02:46:55,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:46:55,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:46:55,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:46:55,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:46:55,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:46:55,709 INFO L87 Difference]: Start difference. First operand 698 states and 1154 transitions. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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 02:46:56,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:46:56,527 INFO L93 Difference]: Finished difference Result 2381 states and 3921 transitions. [2023-11-29 02:46:56,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:46:56,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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 471 [2023-11-29 02:46:56,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:46:56,535 INFO L225 Difference]: With dead ends: 2381 [2023-11-29 02:46:56,535 INFO L226 Difference]: Without dead ends: 1268 [2023-11-29 02:46:56,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 941 GetRequests, 932 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:46:56,538 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 2533 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2533 SdHoareTripleChecker+Valid, 3389 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:46:56,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2533 Valid, 3389 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:46:56,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2023-11-29 02:46:56,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 700. [2023-11-29 02:46:56,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 699 states have (on average 1.65379113018598) internal successors, (1156), 699 states have internal predecessors, (1156), 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 02:46:56,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1156 transitions. [2023-11-29 02:46:56,556 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1156 transitions. Word has length 471 [2023-11-29 02:46:56,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:46:56,557 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 1156 transitions. [2023-11-29 02:46:56,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 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 02:46:56,557 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1156 transitions. [2023-11-29 02:46:56,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2023-11-29 02:46:56,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:46:56,564 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:46:56,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 02:46:56,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 02:46:56,765 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:46:56,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:46:56,766 INFO L85 PathProgramCache]: Analyzing trace with hash -264726099, now seen corresponding path program 1 times [2023-11-29 02:46:56,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:46:56,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934384630] [2023-11-29 02:46:56,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:46:56,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:46:56,865 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:46:56,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886958845] [2023-11-29 02:46:56,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:46:56,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:46:56,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:46:56,867 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:46:56,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 02:46:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:46:57,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 3053 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 02:46:57,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:46:57,843 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 37 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 02:46:57,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:46:57,919 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-29 02:46:57,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:46:57,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934384630] [2023-11-29 02:46:57,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:46:57,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886958845] [2023-11-29 02:46:57,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886958845] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:46:57,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:46:57,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 02:46:57,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328840522] [2023-11-29 02:46:57,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:46:57,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:46:57,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:46:57,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:46:57,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:46:57,923 INFO L87 Difference]: Start difference. First operand 700 states and 1156 transitions. Second operand has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 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 02:46:58,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:46:58,907 INFO L93 Difference]: Finished difference Result 2389 states and 3929 transitions. [2023-11-29 02:46:58,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:46:58,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 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 472 [2023-11-29 02:46:58,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:46:58,916 INFO L225 Difference]: With dead ends: 2389 [2023-11-29 02:46:58,916 INFO L226 Difference]: Without dead ends: 1269 [2023-11-29 02:46:58,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 934 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:46:58,918 INFO L413 NwaCegarLoop]: 1691 mSDtfsCounter, 1727 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1727 SdHoareTripleChecker+Valid, 4263 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:46:58,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1727 Valid, 4263 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 02:46:58,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2023-11-29 02:46:58,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 702. [2023-11-29 02:46:58,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 1.6519258202567761) internal successors, (1158), 701 states have internal predecessors, (1158), 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 02:46:58,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1158 transitions. [2023-11-29 02:46:58,942 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1158 transitions. Word has length 472 [2023-11-29 02:46:58,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:46:58,943 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 1158 transitions. [2023-11-29 02:46:58,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 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 02:46:58,944 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1158 transitions. [2023-11-29 02:46:58,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2023-11-29 02:46:58,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:46:58,948 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:46:58,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 02:46:59,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 02:46:59,151 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:46:59,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:46:59,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1457577391, now seen corresponding path program 1 times [2023-11-29 02:46:59,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:46:59,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559946274] [2023-11-29 02:46:59,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:46:59,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:46:59,256 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:46:59,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403686536] [2023-11-29 02:46:59,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:46:59,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:46:59,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:46:59,258 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:46:59,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 02:46:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:46:59,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 3056 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 02:46:59,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:47:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 14 proven. 37 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 02:47:00,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:47:00,174 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 02:47:00,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:47:00,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559946274] [2023-11-29 02:47:00,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:47:00,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403686536] [2023-11-29 02:47:00,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403686536] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:47:00,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:47:00,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 02:47:00,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020227693] [2023-11-29 02:47:00,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:47:00,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:47:00,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:47:00,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:47:00,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:47:00,179 INFO L87 Difference]: Start difference. First operand 702 states and 1158 transitions. Second operand has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 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 02:47:00,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:47:00,968 INFO L93 Difference]: Finished difference Result 2397 states and 3937 transitions. [2023-11-29 02:47:00,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:47:00,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 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 473 [2023-11-29 02:47:00,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:47:00,977 INFO L225 Difference]: With dead ends: 2397 [2023-11-29 02:47:00,977 INFO L226 Difference]: Without dead ends: 1270 [2023-11-29 02:47:00,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 945 GetRequests, 936 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:47:00,979 INFO L413 NwaCegarLoop]: 1683 mSDtfsCounter, 2512 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2512 SdHoareTripleChecker+Valid, 3364 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:47:00,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2512 Valid, 3364 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:47:00,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2023-11-29 02:47:00,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 704. [2023-11-29 02:47:00,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 703 states have (on average 1.6500711237553343) internal successors, (1160), 703 states have internal predecessors, (1160), 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 02:47:00,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1160 transitions. [2023-11-29 02:47:00,997 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1160 transitions. Word has length 473 [2023-11-29 02:47:00,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:47:00,997 INFO L495 AbstractCegarLoop]: Abstraction has 704 states and 1160 transitions. [2023-11-29 02:47:00,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.0) internal successors, (430), 5 states have internal predecessors, (430), 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 02:47:00,998 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1160 transitions. [2023-11-29 02:47:01,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2023-11-29 02:47:01,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:47:01,001 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:47:01,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 02:47:01,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:47:01,202 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:47:01,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:47:01,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1037042989, now seen corresponding path program 1 times [2023-11-29 02:47:01,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:47:01,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709215924] [2023-11-29 02:47:01,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:47:01,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:47:01,274 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:47:01,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407989855] [2023-11-29 02:47:01,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:47:01,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:47:01,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:47:01,275 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:47:01,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 02:47:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:47:02,038 INFO L262 TraceCheckSpWp]: Trace formula consists of 3059 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 02:47:02,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:47:02,159 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 16 proven. 37 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 02:47:02,159 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:47:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-29 02:47:02,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:47:02,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709215924] [2023-11-29 02:47:02,241 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:47:02,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407989855] [2023-11-29 02:47:02,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407989855] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:47:02,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:47:02,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 02:47:02,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11682139] [2023-11-29 02:47:02,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:47:02,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:47:02,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:47:02,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:47:02,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:47:02,244 INFO L87 Difference]: Start difference. First operand 704 states and 1160 transitions. Second operand has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 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 02:47:02,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:47:02,975 INFO L93 Difference]: Finished difference Result 2405 states and 3945 transitions. [2023-11-29 02:47:02,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:47:02,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 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 474 [2023-11-29 02:47:02,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:47:02,981 INFO L225 Difference]: With dead ends: 2405 [2023-11-29 02:47:02,981 INFO L226 Difference]: Without dead ends: 1271 [2023-11-29 02:47:02,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 947 GetRequests, 938 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:47:02,983 INFO L413 NwaCegarLoop]: 1675 mSDtfsCounter, 2503 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2503 SdHoareTripleChecker+Valid, 3351 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:47:02,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2503 Valid, 3351 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:47:02,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2023-11-29 02:47:03,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 706. [2023-11-29 02:47:03,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 705 states have (on average 1.6482269503546099) internal successors, (1162), 705 states have internal predecessors, (1162), 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 02:47:03,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1162 transitions. [2023-11-29 02:47:03,005 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1162 transitions. Word has length 474 [2023-11-29 02:47:03,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:47:03,006 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 1162 transitions. [2023-11-29 02:47:03,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 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 02:47:03,006 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1162 transitions. [2023-11-29 02:47:03,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2023-11-29 02:47:03,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:47:03,010 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:47:03,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 02:47:03,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:47:03,212 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:47:03,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:47:03,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1737258541, now seen corresponding path program 1 times [2023-11-29 02:47:03,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:47:03,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772284239] [2023-11-29 02:47:03,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:47:03,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:47:03,300 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:47:03,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836852685] [2023-11-29 02:47:03,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:47:03,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:47:03,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:47:03,301 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:47:03,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 02:47:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:47:04,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 3063 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 02:47:04,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:47:04,120 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 37 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 02:47:04,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:47:04,193 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-29 02:47:04,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:47:04,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772284239] [2023-11-29 02:47:04,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:47:04,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836852685] [2023-11-29 02:47:04,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836852685] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:47:04,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:47:04,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 02:47:04,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183194427] [2023-11-29 02:47:04,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:47:04,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:47:04,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:47:04,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:47:04,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:47:04,196 INFO L87 Difference]: Start difference. First operand 706 states and 1162 transitions. Second operand has 5 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 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 02:47:04,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:47:04,915 INFO L93 Difference]: Finished difference Result 2413 states and 3953 transitions. [2023-11-29 02:47:04,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:47:04,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 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 475 [2023-11-29 02:47:04,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:47:04,924 INFO L225 Difference]: With dead ends: 2413 [2023-11-29 02:47:04,924 INFO L226 Difference]: Without dead ends: 1272 [2023-11-29 02:47:04,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 949 GetRequests, 940 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:47:04,926 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 2494 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2494 SdHoareTripleChecker+Valid, 3338 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:47:04,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2494 Valid, 3338 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:47:04,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2023-11-29 02:47:04,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 708. [2023-11-29 02:47:04,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 707 states have (on average 1.6463932107496464) internal successors, (1164), 707 states have internal predecessors, (1164), 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 02:47:04,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1164 transitions. [2023-11-29 02:47:04,943 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1164 transitions. Word has length 475 [2023-11-29 02:47:04,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:47:04,944 INFO L495 AbstractCegarLoop]: Abstraction has 708 states and 1164 transitions. [2023-11-29 02:47:04,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 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 02:47:04,945 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1164 transitions. [2023-11-29 02:47:04,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2023-11-29 02:47:04,948 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:47:04,948 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:47:04,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 02:47:05,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 02:47:05,149 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:47:05,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:47:05,150 INFO L85 PathProgramCache]: Analyzing trace with hash -778799109, now seen corresponding path program 1 times [2023-11-29 02:47:05,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:47:05,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500821212] [2023-11-29 02:47:05,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:47:05,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:47:05,234 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:47:05,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102003290] [2023-11-29 02:47:05,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:47:05,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:47:05,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:47:05,235 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:47:05,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 02:47:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:47:05,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 02:47:05,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:47:06,014 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 20 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 02:47:06,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:47:06,087 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 02:47:06,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:47:06,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500821212] [2023-11-29 02:47:06,087 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:47:06,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102003290] [2023-11-29 02:47:06,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102003290] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:47:06,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:47:06,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 02:47:06,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383077571] [2023-11-29 02:47:06,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:47:06,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:47:06,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:47:06,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:47:06,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:47:06,091 INFO L87 Difference]: Start difference. First operand 708 states and 1164 transitions. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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 02:47:06,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:47:06,837 INFO L93 Difference]: Finished difference Result 2421 states and 3961 transitions. [2023-11-29 02:47:06,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:47:06,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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 476 [2023-11-29 02:47:06,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:47:06,845 INFO L225 Difference]: With dead ends: 2421 [2023-11-29 02:47:06,845 INFO L226 Difference]: Without dead ends: 1273 [2023-11-29 02:47:06,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 951 GetRequests, 942 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:47:06,847 INFO L413 NwaCegarLoop]: 1659 mSDtfsCounter, 1703 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 4191 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:47:06,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1703 Valid, 4191 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:47:06,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2023-11-29 02:47:06,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 710. [2023-11-29 02:47:06,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 1.6445698166431595) internal successors, (1166), 709 states have internal predecessors, (1166), 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 02:47:06,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1166 transitions. [2023-11-29 02:47:06,865 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1166 transitions. Word has length 476 [2023-11-29 02:47:06,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:47:06,865 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 1166 transitions. [2023-11-29 02:47:06,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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 02:47:06,866 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1166 transitions. [2023-11-29 02:47:06,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2023-11-29 02:47:06,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:47:06,869 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:47:06,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 02:47:07,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 02:47:07,075 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:47:07,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:47:07,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1822736889, now seen corresponding path program 1 times [2023-11-29 02:47:07,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:47:07,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065229733] [2023-11-29 02:47:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:47:07,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:47:07,154 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:47:07,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [99114113] [2023-11-29 02:47:07,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:47:07,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:47:07,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:47:07,156 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:47:07,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 02:47:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:47:07,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 3069 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 02:47:07,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:47:07,879 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 21 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:47:07,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:47:07,958 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-29 02:47:07,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:47:07,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065229733] [2023-11-29 02:47:07,958 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:47:07,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99114113] [2023-11-29 02:47:07,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99114113] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:47:07,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:47:07,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 02:47:07,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455390569] [2023-11-29 02:47:07,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:47:07,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:47:07,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:47:07,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:47:07,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:47:07,962 INFO L87 Difference]: Start difference. First operand 710 states and 1166 transitions. Second operand has 5 states, 5 states have (on average 88.4) internal successors, (442), 5 states have internal predecessors, (442), 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 02:47:08,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:47:08,580 INFO L93 Difference]: Finished difference Result 2429 states and 3969 transitions. [2023-11-29 02:47:08,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:47:08,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 88.4) internal successors, (442), 5 states have internal predecessors, (442), 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 477 [2023-11-29 02:47:08,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:47:08,587 INFO L225 Difference]: With dead ends: 2429 [2023-11-29 02:47:08,588 INFO L226 Difference]: Without dead ends: 1274 [2023-11-29 02:47:08,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 953 GetRequests, 944 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:47:08,590 INFO L413 NwaCegarLoop]: 1651 mSDtfsCounter, 2485 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2485 SdHoareTripleChecker+Valid, 3311 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:47:08,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2485 Valid, 3311 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 02:47:08,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1274 states. [2023-11-29 02:47:08,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1274 to 712. [2023-11-29 02:47:08,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 1.6427566807313643) internal successors, (1168), 711 states have internal predecessors, (1168), 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 02:47:08,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1168 transitions. [2023-11-29 02:47:08,609 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1168 transitions. Word has length 477 [2023-11-29 02:47:08,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:47:08,610 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 1168 transitions. [2023-11-29 02:47:08,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.4) internal successors, (442), 5 states have internal predecessors, (442), 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 02:47:08,611 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1168 transitions. [2023-11-29 02:47:08,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2023-11-29 02:47:08,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:47:08,615 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:47:08,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 02:47:08,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 02:47:08,827 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:47:08,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:47:08,827 INFO L85 PathProgramCache]: Analyzing trace with hash -982008543, now seen corresponding path program 1 times [2023-11-29 02:47:08,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:47:08,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948463653] [2023-11-29 02:47:08,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:47:08,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:47:08,902 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:47:08,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932611676] [2023-11-29 02:47:08,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:47:08,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:47:08,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:47:08,904 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:47:08,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 02:47:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:47:09,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 3072 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 02:47:09,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:47:09,609 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:47:09,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:47:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 02:47:09,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:47:09,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948463653] [2023-11-29 02:47:09,693 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:47:09,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932611676] [2023-11-29 02:47:09,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932611676] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:47:09,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:47:09,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 02:47:09,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192129558] [2023-11-29 02:47:09,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:47:09,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:47:09,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:47:09,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:47:09,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:47:09,697 INFO L87 Difference]: Start difference. First operand 712 states and 1168 transitions. Second operand has 5 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 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 02:47:10,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:47:10,470 INFO L93 Difference]: Finished difference Result 2440 states and 3982 transitions. [2023-11-29 02:47:10,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:47:10,471 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 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 478 [2023-11-29 02:47:10,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:47:10,477 INFO L225 Difference]: With dead ends: 2440 [2023-11-29 02:47:10,477 INFO L226 Difference]: Without dead ends: 1278 [2023-11-29 02:47:10,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 955 GetRequests, 946 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:47:10,479 INFO L413 NwaCegarLoop]: 1638 mSDtfsCounter, 1689 mSDsluCounter, 2510 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 4148 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:47:10,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 4148 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 02:47:10,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2023-11-29 02:47:10,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 717. [2023-11-29 02:47:10,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 716 states have (on average 1.6410614525139664) internal successors, (1175), 716 states have internal predecessors, (1175), 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 02:47:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1175 transitions. [2023-11-29 02:47:10,493 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1175 transitions. Word has length 478 [2023-11-29 02:47:10,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:47:10,493 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 1175 transitions. [2023-11-29 02:47:10,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.4) internal successors, (447), 5 states have internal predecessors, (447), 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 02:47:10,494 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1175 transitions. [2023-11-29 02:47:10,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2023-11-29 02:47:10,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:47:10,498 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:47:10,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 02:47:10,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 02:47:10,699 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:47:10,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:47:10,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1154287611, now seen corresponding path program 1 times [2023-11-29 02:47:10,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:47:10,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332637816] [2023-11-29 02:47:10,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:47:10,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:47:10,786 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:47:10,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637813801] [2023-11-29 02:47:10,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:47:10,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:47:10,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:47:10,788 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:47:10,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 02:47:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:47:11,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 3075 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 02:47:11,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:47:11,554 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:47:11,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:47:11,663 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-29 02:47:11,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:47:11,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332637816] [2023-11-29 02:47:11,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:47:11,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637813801] [2023-11-29 02:47:11,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637813801] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 02:47:11,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 02:47:11,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-29 02:47:11,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860508002] [2023-11-29 02:47:11,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:47:11,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 02:47:11,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:47:11,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 02:47:11,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 02:47:11,667 INFO L87 Difference]: Start difference. First operand 717 states and 1175 transitions. Second operand has 6 states, 6 states have (on average 74.5) internal successors, (447), 6 states have internal predecessors, (447), 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 02:47:13,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:47:13,025 INFO L93 Difference]: Finished difference Result 3062 states and 4995 transitions. [2023-11-29 02:47:13,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:47:13,025 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 74.5) internal successors, (447), 6 states have internal predecessors, (447), 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 479 [2023-11-29 02:47:13,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:47:13,033 INFO L225 Difference]: With dead ends: 3062 [2023-11-29 02:47:13,033 INFO L226 Difference]: Without dead ends: 1891 [2023-11-29 02:47:13,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 946 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:47:13,035 INFO L413 NwaCegarLoop]: 1645 mSDtfsCounter, 2626 mSDsluCounter, 5640 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2626 SdHoareTripleChecker+Valid, 7285 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:47:13,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2626 Valid, 7285 Invalid, 1908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1859 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 02:47:13,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2023-11-29 02:47:13,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 717. [2023-11-29 02:47:13,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 716 states have (on average 1.6410614525139664) internal successors, (1175), 716 states have internal predecessors, (1175), 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 02:47:13,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1175 transitions. [2023-11-29 02:47:13,055 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1175 transitions. Word has length 479 [2023-11-29 02:47:13,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:47:13,056 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 1175 transitions. [2023-11-29 02:47:13,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.5) internal successors, (447), 6 states have internal predecessors, (447), 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 02:47:13,056 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1175 transitions. [2023-11-29 02:47:13,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2023-11-29 02:47:13,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:47:13,060 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:47:13,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 02:47:13,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 02:47:13,261 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:47:13,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:47:13,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1776489655, now seen corresponding path program 1 times [2023-11-29 02:47:13,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:47:13,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355352452] [2023-11-29 02:47:13,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:47:13,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:47:13,352 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:47:13,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1647412234] [2023-11-29 02:47:13,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:47:13,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:47:13,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:47:13,354 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:47:13,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 02:47:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:47:14,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 3079 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 02:47:14,019 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:47:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 26 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:47:14,504 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:47:15,974 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 44 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:47:15,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:47:15,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355352452] [2023-11-29 02:47:15,975 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:47:15,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647412234] [2023-11-29 02:47:15,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647412234] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:47:15,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:47:15,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2023-11-29 02:47:15,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871167098] [2023-11-29 02:47:15,976 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:47:15,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 02:47:15,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:47:15,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 02:47:15,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-11-29 02:47:15,980 INFO L87 Difference]: Start difference. First operand 717 states and 1175 transitions. Second operand has 22 states, 22 states have (on average 41.95454545454545) internal successors, (923), 22 states have internal predecessors, (923), 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 02:47:20,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:47:20,237 INFO L93 Difference]: Finished difference Result 4425 states and 7237 transitions. [2023-11-29 02:47:20,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 02:47:20,238 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 41.95454545454545) internal successors, (923), 22 states have internal predecessors, (923), 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 480 [2023-11-29 02:47:20,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:47:20,252 INFO L225 Difference]: With dead ends: 4425 [2023-11-29 02:47:20,252 INFO L226 Difference]: Without dead ends: 3826 [2023-11-29 02:47:20,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 993 GetRequests, 946 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=431, Invalid=1921, Unknown=0, NotChecked=0, Total=2352 [2023-11-29 02:47:20,254 INFO L413 NwaCegarLoop]: 2654 mSDtfsCounter, 14161 mSDsluCounter, 21835 mSDsCounter, 0 mSdLazyCounter, 4682 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14161 SdHoareTripleChecker+Valid, 24489 SdHoareTripleChecker+Invalid, 4688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:47:20,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14161 Valid, 24489 Invalid, 4688 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 4682 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 02:47:20,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3826 states. [2023-11-29 02:47:20,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3826 to 1396. [2023-11-29 02:47:20,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1395 states have (on average 1.639426523297491) internal successors, (2287), 1395 states have internal predecessors, (2287), 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 02:47:20,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 2287 transitions. [2023-11-29 02:47:20,309 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 2287 transitions. Word has length 480 [2023-11-29 02:47:20,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:47:20,310 INFO L495 AbstractCegarLoop]: Abstraction has 1396 states and 2287 transitions. [2023-11-29 02:47:20,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 41.95454545454545) internal successors, (923), 22 states have internal predecessors, (923), 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 02:47:20,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 2287 transitions. [2023-11-29 02:47:20,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2023-11-29 02:47:20,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:47:20,316 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:47:20,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 02:47:20,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 02:47:20,517 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:47:20,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:47:20,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1152222657, now seen corresponding path program 1 times [2023-11-29 02:47:20,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:47:20,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464282025] [2023-11-29 02:47:20,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:47:20,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:47:20,590 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:47:20,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1391641472] [2023-11-29 02:47:20,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:47:20,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:47:20,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:47:20,592 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:47:20,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 02:47:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:47:21,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 3082 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 02:47:21,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:47:21,865 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 26 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:47:21,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:47:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 44 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:47:22,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:47:22,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464282025] [2023-11-29 02:47:22,362 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:47:22,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391641472] [2023-11-29 02:47:22,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391641472] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:47:22,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:47:22,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 20 [2023-11-29 02:47:22,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193406662] [2023-11-29 02:47:22,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:47:22,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 02:47:22,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:47:22,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 02:47:22,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-11-29 02:47:22,366 INFO L87 Difference]: Start difference. First operand 1396 states and 2287 transitions. Second operand has 20 states, 20 states have (on average 46.1) internal successors, (922), 20 states have internal predecessors, (922), 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 02:47:26,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:47:26,049 INFO L93 Difference]: Finished difference Result 7623 states and 12423 transitions. [2023-11-29 02:47:26,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 02:47:26,049 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 46.1) internal successors, (922), 20 states have internal predecessors, (922), 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 481 [2023-11-29 02:47:26,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:47:26,073 INFO L225 Difference]: With dead ends: 7623 [2023-11-29 02:47:26,073 INFO L226 Difference]: Without dead ends: 6393 [2023-11-29 02:47:26,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 987 GetRequests, 949 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=368, Invalid=1192, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 02:47:26,076 INFO L413 NwaCegarLoop]: 3122 mSDtfsCounter, 7933 mSDsluCounter, 25572 mSDsCounter, 0 mSdLazyCounter, 5074 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7933 SdHoareTripleChecker+Valid, 28694 SdHoareTripleChecker+Invalid, 5163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 5074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 02:47:26,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7933 Valid, 28694 Invalid, 5163 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [89 Valid, 5074 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 02:47:26,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6393 states. [2023-11-29 02:47:26,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6393 to 1405. [2023-11-29 02:47:26,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1405 states, 1404 states have (on average 1.6396011396011396) internal successors, (2302), 1404 states have internal predecessors, (2302), 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 02:47:26,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1405 states to 1405 states and 2302 transitions. [2023-11-29 02:47:26,131 INFO L78 Accepts]: Start accepts. Automaton has 1405 states and 2302 transitions. Word has length 481 [2023-11-29 02:47:26,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:47:26,132 INFO L495 AbstractCegarLoop]: Abstraction has 1405 states and 2302 transitions. [2023-11-29 02:47:26,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 46.1) internal successors, (922), 20 states have internal predecessors, (922), 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 02:47:26,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1405 states and 2302 transitions. [2023-11-29 02:47:26,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-11-29 02:47:26,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:47:26,136 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:47:26,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 02:47:26,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 02:47:26,337 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:47:26,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:47:26,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1692269541, now seen corresponding path program 1 times [2023-11-29 02:47:26,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:47:26,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913553029] [2023-11-29 02:47:26,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:47:26,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:47:26,397 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:47:26,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [220984453] [2023-11-29 02:47:26,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:47:26,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:47:26,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:47:26,399 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:47:26,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 02:47:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:47:27,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 3086 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-29 02:47:27,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:47:29,506 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:47:29,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:47:29,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:47:29,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913553029] [2023-11-29 02:47:29,507 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:47:29,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220984453] [2023-11-29 02:47:29,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220984453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:47:29,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:47:29,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 02:47:29,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765984139] [2023-11-29 02:47:29,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:47:29,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 02:47:29,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:47:29,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 02:47:29,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-29 02:47:29,510 INFO L87 Difference]: Start difference. First operand 1405 states and 2302 transitions. Second operand has 13 states, 13 states have (on average 37.07692307692308) internal successors, (482), 12 states have internal predecessors, (482), 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 02:47:33,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:47:33,264 INFO L93 Difference]: Finished difference Result 7491 states and 12206 transitions. [2023-11-29 02:47:33,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 02:47:33,265 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 37.07692307692308) internal successors, (482), 12 states have internal predecessors, (482), 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 482 [2023-11-29 02:47:33,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:47:33,272 INFO L225 Difference]: With dead ends: 7491 [2023-11-29 02:47:33,272 INFO L226 Difference]: Without dead ends: 6255 [2023-11-29 02:47:33,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2023-11-29 02:47:33,274 INFO L413 NwaCegarLoop]: 2140 mSDtfsCounter, 7059 mSDsluCounter, 15555 mSDsCounter, 0 mSdLazyCounter, 5761 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7059 SdHoareTripleChecker+Valid, 17695 SdHoareTripleChecker+Invalid, 5766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 5761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:47:33,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7059 Valid, 17695 Invalid, 5766 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 5761 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 02:47:33,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6255 states. [2023-11-29 02:47:33,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6255 to 2505. [2023-11-29 02:47:33,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2504 states have (on average 1.6349840255591055) internal successors, (4094), 2504 states have internal predecessors, (4094), 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 02:47:33,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4094 transitions. [2023-11-29 02:47:33,328 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4094 transitions. Word has length 482 [2023-11-29 02:47:33,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:47:33,329 INFO L495 AbstractCegarLoop]: Abstraction has 2505 states and 4094 transitions. [2023-11-29 02:47:33,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.07692307692308) internal successors, (482), 12 states have internal predecessors, (482), 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 02:47:33,329 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4094 transitions. [2023-11-29 02:47:33,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2023-11-29 02:47:33,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:47:33,335 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:47:33,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 02:47:33,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 02:47:33,536 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:47:33,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:47:33,536 INFO L85 PathProgramCache]: Analyzing trace with hash 950773795, now seen corresponding path program 1 times [2023-11-29 02:47:33,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:47:33,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993314504] [2023-11-29 02:47:33,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:47:33,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:47:33,596 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:47:33,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [258866234] [2023-11-29 02:47:33,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:47:33,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:47:33,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:47:33,598 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:47:33,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 02:47:34,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:47:34,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 3087 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 02:47:34,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:47:35,320 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 26 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:47:35,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:47:37,309 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 48 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:47:37,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:47:37,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993314504] [2023-11-29 02:47:37,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:47:37,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258866234] [2023-11-29 02:47:37,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258866234] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:47:37,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:47:37,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 23 [2023-11-29 02:47:37,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324071755] [2023-11-29 02:47:37,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:47:37,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 02:47:37,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:47:37,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 02:47:37,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2023-11-29 02:47:37,314 INFO L87 Difference]: Start difference. First operand 2505 states and 4094 transitions. Second operand has 23 states, 23 states have (on average 36.56521739130435) internal successors, (841), 23 states have internal predecessors, (841), 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 02:47:44,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:47:44,741 INFO L93 Difference]: Finished difference Result 17457 states and 28124 transitions. [2023-11-29 02:47:44,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-11-29 02:47:44,742 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 36.56521739130435) internal successors, (841), 23 states have internal predecessors, (841), 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 482 [2023-11-29 02:47:44,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:47:44,760 INFO L225 Difference]: With dead ends: 17457 [2023-11-29 02:47:44,761 INFO L226 Difference]: Without dead ends: 15215 [2023-11-29 02:47:44,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1059 GetRequests, 967 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2738 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1554, Invalid=7188, Unknown=0, NotChecked=0, Total=8742 [2023-11-29 02:47:44,766 INFO L413 NwaCegarLoop]: 2297 mSDtfsCounter, 13813 mSDsluCounter, 23107 mSDsCounter, 0 mSdLazyCounter, 7970 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13813 SdHoareTripleChecker+Valid, 25404 SdHoareTripleChecker+Invalid, 7985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 7970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:47:44,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13813 Valid, 25404 Invalid, 7985 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 7970 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-29 02:47:44,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15215 states. [2023-11-29 02:47:44,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15215 to 3591. [2023-11-29 02:47:44,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3591 states, 3590 states have (on average 1.634540389972145) internal successors, (5868), 3590 states have internal predecessors, (5868), 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 02:47:44,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3591 states to 3591 states and 5868 transitions. [2023-11-29 02:47:44,878 INFO L78 Accepts]: Start accepts. Automaton has 3591 states and 5868 transitions. Word has length 482 [2023-11-29 02:47:44,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:47:44,879 INFO L495 AbstractCegarLoop]: Abstraction has 3591 states and 5868 transitions. [2023-11-29 02:47:44,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 36.56521739130435) internal successors, (841), 23 states have internal predecessors, (841), 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 02:47:44,879 INFO L276 IsEmpty]: Start isEmpty. Operand 3591 states and 5868 transitions. [2023-11-29 02:47:44,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2023-11-29 02:47:44,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:47:44,886 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:47:44,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 02:47:45,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 02:47:45,087 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:47:45,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:47:45,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1811591733, now seen corresponding path program 1 times [2023-11-29 02:47:45,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:47:45,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536772150] [2023-11-29 02:47:45,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:47:45,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:47:45,173 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:47:45,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981434244] [2023-11-29 02:47:45,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:47:45,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:47:45,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:47:45,175 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:47:45,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 02:47:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:47:45,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 3089 conjuncts, 85 conjunts are in the unsatisfiable core [2023-11-29 02:47:45,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:47:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 16 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:47:47,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:47:50,636 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 13 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:47:50,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:47:50,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536772150] [2023-11-29 02:47:50,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:47:50,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981434244] [2023-11-29 02:47:50,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981434244] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:47:50,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:47:50,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25] total 46 [2023-11-29 02:47:50,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314078989] [2023-11-29 02:47:50,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:47:50,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-29 02:47:50,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:47:50,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-29 02:47:50,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1997, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 02:47:50,642 INFO L87 Difference]: Start difference. First operand 3591 states and 5868 transitions. Second operand has 47 states, 47 states have (on average 20.170212765957448) internal successors, (948), 46 states have internal predecessors, (948), 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 02:57:49,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2023-11-29 02:57:49,385 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-11-29 02:57:49,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2232 states. [2023-11-29 02:57:49,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3191 GetRequests, 919 SyntacticMatches, 0 SemanticMatches, 2271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2439262 ImplicationChecksByTransitivity, 238.9s TimeCoverageRelationStatistics Valid=292902, Invalid=4871354, Unknown=0, NotChecked=0, Total=5164256 [2023-11-29 02:57:49,698 INFO L413 NwaCegarLoop]: 36618 mSDtfsCounter, 41974 mSDsluCounter, 874613 mSDsCounter, 0 mSdLazyCounter, 312059 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 203.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41974 SdHoareTripleChecker+Valid, 911231 SdHoareTripleChecker+Invalid, 312082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.6s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 312059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 237.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:57:49,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41974 Valid, 911231 Invalid, 312082 Unknown, 0 Unchecked, 3.6s Time], IncrementalHoareTripleChecker [23 Valid, 312059 Invalid, 0 Unknown, 0 Unchecked, 237.4s Time] [2023-11-29 02:57:49,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 02:57:49,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:57:49,899 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:915) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:789) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:377) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:247) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:353) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 47 more [2023-11-29 02:57:49,903 INFO L158 Benchmark]: Toolchain (without parser) took 664554.32ms. Allocated memory was 157.3MB in the beginning and 4.5GB in the end (delta: 4.4GB). Free memory was 108.5MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2023-11-29 02:57:49,903 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 157.3MB. Free memory is still 126.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 02:57:49,904 INFO L158 Benchmark]: CACSL2BoogieTranslator took 628.70ms. Allocated memory is still 157.3MB. Free memory was 108.5MB in the beginning and 59.5MB in the end (delta: 49.0MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2023-11-29 02:57:49,904 INFO L158 Benchmark]: Boogie Procedure Inliner took 340.85ms. Allocated memory was 157.3MB in the beginning and 239.1MB in the end (delta: 81.8MB). Free memory was 59.5MB in the beginning and 145.3MB in the end (delta: -85.8MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2023-11-29 02:57:49,904 INFO L158 Benchmark]: Boogie Preprocessor took 338.46ms. Allocated memory is still 239.1MB. Free memory was 145.3MB in the beginning and 112.8MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2023-11-29 02:57:49,905 INFO L158 Benchmark]: RCFGBuilder took 2685.03ms. Allocated memory was 239.1MB in the beginning and 323.0MB in the end (delta: 83.9MB). Free memory was 112.8MB in the beginning and 204.3MB in the end (delta: -91.5MB). Peak memory consumption was 59.0MB. Max. memory is 16.1GB. [2023-11-29 02:57:49,905 INFO L158 Benchmark]: TraceAbstraction took 660555.41ms. Allocated memory was 323.0MB in the beginning and 4.5GB in the end (delta: 4.2GB). Free memory was 203.3MB in the beginning and 2.2GB in the end (delta: -2.0GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2023-11-29 02:57:49,907 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 157.3MB. Free memory is still 126.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 628.70ms. Allocated memory is still 157.3MB. Free memory was 108.5MB in the beginning and 59.5MB in the end (delta: 49.0MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 340.85ms. Allocated memory was 157.3MB in the beginning and 239.1MB in the end (delta: 81.8MB). Free memory was 59.5MB in the beginning and 145.3MB in the end (delta: -85.8MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 338.46ms. Allocated memory is still 239.1MB. Free memory was 145.3MB in the beginning and 112.8MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * RCFGBuilder took 2685.03ms. Allocated memory was 239.1MB in the beginning and 323.0MB in the end (delta: 83.9MB). Free memory was 112.8MB in the beginning and 204.3MB in the end (delta: -91.5MB). Peak memory consumption was 59.0MB. Max. memory is 16.1GB. * TraceAbstraction took 660555.41ms. Allocated memory was 323.0MB in the beginning and 4.5GB in the end (delta: 4.2GB). Free memory was 203.3MB in the beginning and 2.2GB in the end (delta: -2.0GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/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_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/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 64bit --witnessprinter.graph.data.programhash 875156c3731c0a5bf4c4c8e31515b41d84546cbf12ddfa7ae901dd39a126b063 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 02:57:51,825 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 02:57:51,901 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-11-29 02:57:51,907 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 02:57:51,908 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 02:57:51,935 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 02:57:51,936 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 02:57:51,937 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 02:57:51,938 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 02:57:51,938 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 02:57:51,939 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 02:57:51,939 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 02:57:51,940 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 02:57:51,941 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 02:57:51,942 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 02:57:51,942 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 02:57:51,943 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 02:57:51,943 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 02:57:51,944 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 02:57:51,944 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 02:57:51,945 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 02:57:51,945 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 02:57:51,945 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 02:57:51,946 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 02:57:51,946 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 02:57:51,947 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 02:57:51,947 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 02:57:51,947 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 02:57:51,948 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 02:57:51,948 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 02:57:51,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:57:51,949 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 02:57:51,950 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 02:57:51,950 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 02:57:51,950 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 02:57:51,950 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 02:57:51,951 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 02:57:51,951 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 02:57:51,951 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 02:57:51,951 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 02:57:51,951 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 02:57:51,952 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 02:57:51,952 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_ab77b716-1793-421f-a25d-7a52608a84f2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 875156c3731c0a5bf4c4c8e31515b41d84546cbf12ddfa7ae901dd39a126b063 [2023-11-29 02:57:52,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 02:57:52,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 02:57:52,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 02:57:52,249 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 02:57:52,249 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 02:57:52,250 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-back-serstep.c [2023-11-29 02:57:55,106 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 02:57:55,355 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 02:57:55,356 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-back-serstep.c [2023-11-29 02:57:55,369 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/data/b1115c144/5cff79bb23ad4b4b9cc18be531d4f01c/FLAGd34849894 [2023-11-29 02:57:55,663 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/data/b1115c144/5cff79bb23ad4b4b9cc18be531d4f01c [2023-11-29 02:57:55,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 02:57:55,667 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 02:57:55,688 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 02:57:55,688 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 02:57:55,693 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 02:57:55,694 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:57:55" (1/1) ... [2023-11-29 02:57:55,695 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194fd143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:55, skipping insertion in model container [2023-11-29 02:57:55,695 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 02:57:55" (1/1) ... [2023-11-29 02:57:55,763 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 02:57:55,945 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_ab77b716-1793-421f-a25d-7a52608a84f2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-back-serstep.c[1172,1185] [2023-11-29 02:57:56,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:57:56,169 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 02:57:56,182 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_ab77b716-1793-421f-a25d-7a52608a84f2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-back-serstep.c[1172,1185] [2023-11-29 02:57:56,255 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 02:57:56,269 INFO L206 MainTranslator]: Completed translation [2023-11-29 02:57:56,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:56 WrapperNode [2023-11-29 02:57:56,270 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 02:57:56,271 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 02:57:56,271 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 02:57:56,271 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 02:57:56,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:56" (1/1) ... [2023-11-29 02:57:56,312 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:56" (1/1) ... [2023-11-29 02:57:56,392 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1194 [2023-11-29 02:57:56,393 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 02:57:56,393 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 02:57:56,393 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 02:57:56,394 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 02:57:56,405 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:56" (1/1) ... [2023-11-29 02:57:56,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:56" (1/1) ... [2023-11-29 02:57:56,413 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:56" (1/1) ... [2023-11-29 02:57:56,441 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 02:57:56,441 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:56" (1/1) ... [2023-11-29 02:57:56,442 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:56" (1/1) ... [2023-11-29 02:57:56,471 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:56" (1/1) ... [2023-11-29 02:57:56,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:56" (1/1) ... [2023-11-29 02:57:56,480 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:56" (1/1) ... [2023-11-29 02:57:56,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:56" (1/1) ... [2023-11-29 02:57:56,500 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 02:57:56,501 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 02:57:56,501 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 02:57:56,501 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 02:57:56,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:56" (1/1) ... [2023-11-29 02:57:56,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 02:57:56,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:57:56,531 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 02:57:56,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 02:57:56,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 02:57:56,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 02:57:56,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 02:57:56,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 02:57:56,843 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 02:57:56,845 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 02:57:58,424 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 02:57:58,510 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 02:57:58,510 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 02:57:58,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:57:58 BoogieIcfgContainer [2023-11-29 02:57:58,511 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 02:57:58,513 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 02:57:58,513 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 02:57:58,516 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 02:57:58,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 02:57:55" (1/3) ... [2023-11-29 02:57:58,517 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b58c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:57:58, skipping insertion in model container [2023-11-29 02:57:58,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 02:57:56" (2/3) ... [2023-11-29 02:57:58,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b58c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 02:57:58, skipping insertion in model container [2023-11-29 02:57:58,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 02:57:58" (3/3) ... [2023-11-29 02:57:58,519 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.loyd.1.prop1-back-serstep.c [2023-11-29 02:57:58,538 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 02:57:58,539 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 02:57:58,580 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 02:57:58,585 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;@2cd6593c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 02:57:58,585 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 02:57:58,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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 02:57:58,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 02:57:58,595 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:57:58,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 02:57:58,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:57:58,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:58,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-11-29 02:57:58,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:57:58,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079324503] [2023-11-29 02:57:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:58,616 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:57:58,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:57:58,618 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 02:57:58,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 02:57:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:57:59,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 02:57:59,015 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:57:59,145 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 02:57:59,146 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:57:59,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:57:59,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079324503] [2023-11-29 02:57:59,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079324503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:57:59,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:57:59,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:57:59,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766339753] [2023-11-29 02:57:59,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:57:59,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:57:59,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:57:59,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:57:59,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:57:59,191 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 02:57:59,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:57:59,723 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-11-29 02:57:59,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:57:59,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2023-11-29 02:57:59,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:57:59,732 INFO L225 Difference]: With dead ends: 16 [2023-11-29 02:57:59,732 INFO L226 Difference]: Without dead ends: 9 [2023-11-29 02:57:59,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:57:59,738 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:57:59,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 02:57:59,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-29 02:57:59,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-29 02:57:59,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 02:57:59,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-29 02:57:59,779 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-29 02:57:59,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:57:59,780 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-29 02:57:59,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 02:57:59,781 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-29 02:57:59,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 02:57:59,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:57:59,781 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-29 02:57:59,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 02:57:59,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:57:59,982 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:57:59,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:57:59,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-11-29 02:57:59,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:57:59,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390677972] [2023-11-29 02:57:59,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:57:59,987 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:57:59,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:57:59,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 02:57:59,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 02:58:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:58:01,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-29 02:58:01,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:58:01,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:58:01,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:58:01,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 02:58:01,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 02:58:01,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390677972] [2023-11-29 02:58:01,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390677972] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:58:01,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:58:01,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-29 02:58:01,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174325509] [2023-11-29 02:58:01,601 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:58:01,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:58:01,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 02:58:01,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:58:01,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:58:01,604 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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 02:58:03,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-29 02:58:03,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:58:03,283 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-29 02:58:03,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 02:58:03,283 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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 7 [2023-11-29 02:58:03,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:58:03,284 INFO L225 Difference]: With dead ends: 14 [2023-11-29 02:58:03,284 INFO L226 Difference]: Without dead ends: 12 [2023-11-29 02:58:03,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:58:03,286 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 10 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 02:58:03,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 11 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 02:58:03,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-29 02:58:03,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-11-29 02:58:03,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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 02:58:03,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-11-29 02:58:03,290 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-11-29 02:58:03,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:58:03,290 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-11-29 02:58:03,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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 02:58:03,290 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-11-29 02:58:03,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 02:58:03,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:58:03,291 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-11-29 02:58:03,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 02:58:03,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:58:03,492 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:58:03,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:58:03,492 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-11-29 02:58:03,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 02:58:03,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302435944] [2023-11-29 02:58:03,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 02:58:03,494 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 02:58:03,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 02:58:03,496 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 02:58:03,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ab77b716-1793-421f-a25d-7a52608a84f2/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 02:58:05,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 02:58:05,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 02:58:05,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 2059 conjuncts, 258 conjunts are in the unsatisfiable core [2023-11-29 02:58:05,285 INFO L285 TraceCheckSpWp]: Computing forward predicates...