./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array22_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array22_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 31d323b6985f030ac0fb5fda45d0cb8af14c3bb3898c8ff09cf5a292e40f357b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:06:55,081 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:06:55,170 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 23:06:55,177 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:06:55,178 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:06:55,210 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:06:55,211 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:06:55,212 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:06:55,213 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:06:55,214 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:06:55,215 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:06:55,216 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:06:55,216 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:06:55,217 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:06:55,218 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:06:55,219 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:06:55,220 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:06:55,220 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:06:55,221 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:06:55,222 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:06:55,222 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:06:55,228 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:06:55,230 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:06:55,231 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:06:55,232 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:06:55,233 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:06:55,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:06:55,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:06:55,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:06:55,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:06:55,237 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:06:55,238 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:06:55,238 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:06:55,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:06:55,238 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:06:55,239 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:06:55,239 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:06:55,239 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:06:55,240 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:06:55,240 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_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31d323b6985f030ac0fb5fda45d0cb8af14c3bb3898c8ff09cf5a292e40f357b [2023-11-06 23:06:55,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:06:55,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:06:55,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:06:55,623 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:06:55,624 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:06:55,625 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/array-patterns/array22_pattern.c [2023-11-06 23:06:59,020 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:06:59,458 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:06:59,459 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/sv-benchmarks/c/array-patterns/array22_pattern.c [2023-11-06 23:06:59,475 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/data/632e860c2/0475ee71fce04e028eb7340164c0cc08/FLAG444309237 [2023-11-06 23:06:59,495 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/data/632e860c2/0475ee71fce04e028eb7340164c0cc08 [2023-11-06 23:06:59,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:06:59,504 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:06:59,506 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:06:59,507 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:06:59,513 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:06:59,516 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:59" (1/1) ... [2023-11-06 23:06:59,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29211242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:59, skipping insertion in model container [2023-11-06 23:06:59,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:06:59" (1/1) ... [2023-11-06 23:06:59,553 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:06:59,770 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_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/sv-benchmarks/c/array-patterns/array22_pattern.c[1347,1360] [2023-11-06 23:06:59,798 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:06:59,810 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:06:59,825 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_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/sv-benchmarks/c/array-patterns/array22_pattern.c[1347,1360] [2023-11-06 23:06:59,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:06:59,855 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:06:59,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:59 WrapperNode [2023-11-06 23:06:59,855 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:06:59,857 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:06:59,857 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:06:59,857 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:06:59,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:59" (1/1) ... [2023-11-06 23:06:59,873 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:59" (1/1) ... [2023-11-06 23:06:59,898 INFO L138 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 111 [2023-11-06 23:06:59,899 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:06:59,899 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:06:59,900 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:06:59,900 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:06:59,910 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:59" (1/1) ... [2023-11-06 23:06:59,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:59" (1/1) ... [2023-11-06 23:06:59,913 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:59" (1/1) ... [2023-11-06 23:06:59,913 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:59" (1/1) ... [2023-11-06 23:06:59,932 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:59" (1/1) ... [2023-11-06 23:06:59,947 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:59" (1/1) ... [2023-11-06 23:06:59,950 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:59" (1/1) ... [2023-11-06 23:06:59,957 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:59" (1/1) ... [2023-11-06 23:06:59,960 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:06:59,961 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:06:59,961 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:06:59,962 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:06:59,963 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:59" (1/1) ... [2023-11-06 23:06:59,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:06:59,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:00,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:07:00,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:07:00,052 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2023-11-06 23:07:00,053 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2023-11-06 23:07:00,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:07:00,053 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 23:07:00,054 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 23:07:00,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:07:00,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:07:00,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:07:00,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:07:00,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:07:00,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:07:00,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:07:00,154 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:07:00,157 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:07:00,430 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:07:00,438 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:07:00,451 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-06 23:07:00,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:00 BoogieIcfgContainer [2023-11-06 23:07:00,454 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:07:00,458 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:07:00,459 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:07:00,464 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:07:00,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:06:59" (1/3) ... [2023-11-06 23:07:00,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c760835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:00, skipping insertion in model container [2023-11-06 23:07:00,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:06:59" (2/3) ... [2023-11-06 23:07:00,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c760835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:07:00, skipping insertion in model container [2023-11-06 23:07:00,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:07:00" (3/3) ... [2023-11-06 23:07:00,475 INFO L112 eAbstractionObserver]: Analyzing ICFG array22_pattern.c [2023-11-06 23:07:00,502 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:07:00,502 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:07:00,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:07:00,583 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=LoopsAndPotentialCycles, 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;@1d1e1230, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:07:00,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 23:07:00,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-06 23:07:00,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-06 23:07:00,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:00,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:07:00,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:00,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:00,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1798908762, now seen corresponding path program 1 times [2023-11-06 23:07:00,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:00,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783699887] [2023-11-06 23:07:00,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:00,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:00,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:00,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783699887] [2023-11-06 23:07:00,788 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 23:07:00,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602612735] [2023-11-06 23:07:00,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:00,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:00,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:00,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:00,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:07:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:00,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 23:07:00,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:00,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:00,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:00,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602612735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:00,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:00,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:07:00,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967947122] [2023-11-06 23:07:00,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:00,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 23:07:00,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:01,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 23:07:01,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:07:01,005 INFO L87 Difference]: Start difference. First operand has 41 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 23:07:01,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:01,049 INFO L93 Difference]: Finished difference Result 79 states and 117 transitions. [2023-11-06 23:07:01,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 23:07:01,052 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-06 23:07:01,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:01,061 INFO L225 Difference]: With dead ends: 79 [2023-11-06 23:07:01,061 INFO L226 Difference]: Without dead ends: 37 [2023-11-06 23:07:01,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 23:07:01,070 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:01,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:07:01,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-06 23:07:01,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-11-06 23:07:01,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-06 23:07:01,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2023-11-06 23:07:01,161 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 15 [2023-11-06 23:07:01,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:01,167 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2023-11-06 23:07:01,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 23:07:01,168 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2023-11-06 23:07:01,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-06 23:07:01,172 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:01,172 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-06 23:07:01,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 23:07:01,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-06 23:07:01,373 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:01,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:01,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1909329698, now seen corresponding path program 1 times [2023-11-06 23:07:01,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:01,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885216335] [2023-11-06 23:07:01,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:01,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:01,428 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:07:01,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1801946947] [2023-11-06 23:07:01,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:01,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:01,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:01,443 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:01,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:07:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:01,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:07:01,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:01,692 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 23:07:01,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:01,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:01,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885216335] [2023-11-06 23:07:01,693 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:07:01,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801946947] [2023-11-06 23:07:01,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801946947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:01,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:01,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:07:01,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813360814] [2023-11-06 23:07:01,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:01,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:07:01,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:01,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:07:01,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:07:01,699 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 23:07:01,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:01,736 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2023-11-06 23:07:01,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:07:01,737 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2023-11-06 23:07:01,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:01,739 INFO L225 Difference]: With dead ends: 44 [2023-11-06 23:07:01,739 INFO L226 Difference]: Without dead ends: 40 [2023-11-06 23:07:01,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:01,742 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 12 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:01,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 110 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:07:01,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-06 23:07:01,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-11-06 23:07:01,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-06 23:07:01,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2023-11-06 23:07:01,756 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 42 [2023-11-06 23:07:01,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:01,758 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2023-11-06 23:07:01,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 23:07:01,759 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2023-11-06 23:07:01,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-06 23:07:01,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:01,762 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-06 23:07:01,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:01,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:01,970 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:01,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:01,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1786751912, now seen corresponding path program 1 times [2023-11-06 23:07:01,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:01,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330112219] [2023-11-06 23:07:01,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:01,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:01,999 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:07:02,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628754290] [2023-11-06 23:07:02,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:02,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:02,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:02,002 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:02,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:07:02,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:02,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:07:02,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:02,218 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-06 23:07:02,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:02,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:02,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330112219] [2023-11-06 23:07:02,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:07:02,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628754290] [2023-11-06 23:07:02,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628754290] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:02,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:02,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:07:02,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502086732] [2023-11-06 23:07:02,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:02,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:07:02,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:02,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:07:02,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:02,224 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 23:07:02,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:02,363 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2023-11-06 23:07:02,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:07:02,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 47 [2023-11-06 23:07:02,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:02,365 INFO L225 Difference]: With dead ends: 83 [2023-11-06 23:07:02,366 INFO L226 Difference]: Without dead ends: 50 [2023-11-06 23:07:02,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:07:02,369 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 24 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:02,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 105 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:07:02,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-06 23:07:02,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2023-11-06 23:07:02,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-06 23:07:02,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2023-11-06 23:07:02,381 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 47 [2023-11-06 23:07:02,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:02,382 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2023-11-06 23:07:02,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 23:07:02,383 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2023-11-06 23:07:02,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-06 23:07:02,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:02,385 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-06 23:07:02,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:02,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:02,598 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:02,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:02,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2075657686, now seen corresponding path program 1 times [2023-11-06 23:07:02,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:02,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508022176] [2023-11-06 23:07:02,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:02,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:02,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:07:02,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [324105353] [2023-11-06 23:07:02,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:02,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:02,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:02,622 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:02,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:07:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:02,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:07:02,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:02,760 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 23:07:02,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:02,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:02,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508022176] [2023-11-06 23:07:02,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:07:02,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324105353] [2023-11-06 23:07:02,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324105353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:02,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:02,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:07:02,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105624147] [2023-11-06 23:07:02,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:02,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:07:02,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:02,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:07:02,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:07:02,765 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 23:07:02,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:02,836 INFO L93 Difference]: Finished difference Result 80 states and 103 transitions. [2023-11-06 23:07:02,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:07:02,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2023-11-06 23:07:02,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:02,838 INFO L225 Difference]: With dead ends: 80 [2023-11-06 23:07:02,838 INFO L226 Difference]: Without dead ends: 44 [2023-11-06 23:07:02,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:02,840 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 30 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:02,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 74 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:07:02,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-06 23:07:02,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2023-11-06 23:07:02,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-06 23:07:02,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2023-11-06 23:07:02,861 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 50 [2023-11-06 23:07:02,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:02,861 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2023-11-06 23:07:02,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 23:07:02,862 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2023-11-06 23:07:02,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-06 23:07:02,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:02,867 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-06 23:07:02,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:03,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:03,073 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:03,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:03,074 INFO L85 PathProgramCache]: Analyzing trace with hash 874891816, now seen corresponding path program 1 times [2023-11-06 23:07:03,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:03,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286631678] [2023-11-06 23:07:03,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:03,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:03,104 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:07:03,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1194806056] [2023-11-06 23:07:03,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:03,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:03,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:03,106 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:03,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:07:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:03,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:07:03,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:03,310 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 23:07:03,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:03,481 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 23:07:03,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:03,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286631678] [2023-11-06 23:07:03,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:07:03,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194806056] [2023-11-06 23:07:03,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194806056] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:03,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 23:07:03,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-11-06 23:07:03,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104557467] [2023-11-06 23:07:03,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:03,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 23:07:03,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:03,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 23:07:03,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:07:03,497 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-06 23:07:03,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:03,686 INFO L93 Difference]: Finished difference Result 87 states and 107 transitions. [2023-11-06 23:07:03,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 23:07:03,688 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 52 [2023-11-06 23:07:03,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:03,693 INFO L225 Difference]: With dead ends: 87 [2023-11-06 23:07:03,693 INFO L226 Difference]: Without dead ends: 51 [2023-11-06 23:07:03,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-11-06 23:07:03,696 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 54 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:03,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 87 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:07:03,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-06 23:07:03,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2023-11-06 23:07:03,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-06 23:07:03,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2023-11-06 23:07:03,719 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 52 [2023-11-06 23:07:03,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:03,720 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2023-11-06 23:07:03,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-06 23:07:03,721 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2023-11-06 23:07:03,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-06 23:07:03,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:03,723 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2023-11-06 23:07:03,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:03,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:03,930 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:03,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:03,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1211966936, now seen corresponding path program 2 times [2023-11-06 23:07:03,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:03,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741878303] [2023-11-06 23:07:03,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:03,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:03,952 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:07:03,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [397970924] [2023-11-06 23:07:03,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:07:03,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:03,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:03,954 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:03,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:07:04,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 23:07:04,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:07:04,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:07:04,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:04,145 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 23:07:04,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:07:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 23:07:04,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:07:04,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741878303] [2023-11-06 23:07:04,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:07:04,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397970924] [2023-11-06 23:07:04,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397970924] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:07:04,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 23:07:04,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-11-06 23:07:04,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078137046] [2023-11-06 23:07:04,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 23:07:04,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 23:07:04,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:07:04,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 23:07:04,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:07:04,228 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 23:07:04,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:07:04,512 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2023-11-06 23:07:04,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 23:07:04,513 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2023-11-06 23:07:04,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:07:04,516 INFO L225 Difference]: With dead ends: 108 [2023-11-06 23:07:04,516 INFO L226 Difference]: Without dead ends: 75 [2023-11-06 23:07:04,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-11-06 23:07:04,520 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 51 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:07:04,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 177 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 23:07:04,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-06 23:07:04,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2023-11-06 23:07:04,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-06 23:07:04,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 74 transitions. [2023-11-06 23:07:04,559 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 74 transitions. Word has length 56 [2023-11-06 23:07:04,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:07:04,560 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 74 transitions. [2023-11-06 23:07:04,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 23:07:04,561 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 74 transitions. [2023-11-06 23:07:04,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-06 23:07:04,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:07:04,564 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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] [2023-11-06 23:07:04,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 23:07:04,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 23:07:04,771 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:07:04,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:04,772 INFO L85 PathProgramCache]: Analyzing trace with hash -511912674, now seen corresponding path program 3 times [2023-11-06 23:07:04,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:07:04,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741636379] [2023-11-06 23:07:04,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:04,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:07:04,817 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:07:04,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [972062217] [2023-11-06 23:07:04,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 23:07:04,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:07:04,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:07:04,822 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:07:04,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_24009bc0-688c-4a75-b97c-12b1e7ea3ff6/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 23:07:06,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-11-06 23:07:06,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:07:06,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-06 23:07:06,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:06,400 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 23:07:06,512 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-06 23:07:06,812 INFO L322 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2023-11-06 23:07:06,812 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 36 [2023-11-06 23:07:07,052 INFO L322 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2023-11-06 23:07:07,053 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 55 [2023-11-06 23:07:09,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:07:09,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:07:09,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:07:09,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:07:09,853 INFO L322 Elim1Store]: treesize reduction 270, result has 36.5 percent of original size [2023-11-06 23:07:09,854 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 120 treesize of output 194 [2023-11-06 23:07:14,910 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 164 [2023-11-06 23:07:14,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:07:14,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:07:14,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:07:14,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:07:14,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:07:14,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:07:14,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:07:14,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:07:15,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:07:15,134 INFO L322 Elim1Store]: treesize reduction 333, result has 0.3 percent of original size [2023-11-06 23:07:15,134 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 164 treesize of output 262 [2023-11-06 23:07:15,258 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-06 23:07:49,124 WARN L293 SmtUtils]: Spent 10.91s on a formula simplification that was a NOOP. DAG size: 207 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 23:08:20,490 WARN L293 SmtUtils]: Spent 5.53s on a formula simplification that was a NOOP. DAG size: 209 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 23:08:30,633 WARN L839 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~row~0#1| 0) (<= 2 c_~ARR_SIZE~0) (<= c_~ARR_SIZE~0 32767) (let ((.cse11 (* c_~ARR_SIZE~0 4))) (let ((.cse41 (* (+ (- 1) c_~ARR_SIZE~0) .cse11)) (.cse0 (mod (+ c_~ARR_SIZE~0 4294967295) 4294967296)) (.cse17 (* c_~ARR_SIZE~0 c_~ARR_SIZE~0))) (let ((.cse14 (* .cse17 4)) (.cse19 (* c_~ARR_SIZE~0 c_~ARR_SIZE~0 4294967295)) (.cse10 (* .cse0 4)) (.cse8 (+ .cse41 (- 4) .cse11)) (.cse7 (+ .cse41 .cse11 (- 8))) (.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~0#1.base|))) (or (exists ((|ULTIMATE.start_main_~index1~0#1| Int)) (and (<= (+ |ULTIMATE.start_main_~index1~0#1| 1) c_~ARR_SIZE~0) (exists ((v_z_9 Int)) (let ((.cse4 (* |ULTIMATE.start_main_~index1~0#1| .cse11)) (.cse9 (* v_z_9 4))) (let ((.cse2 (+ .cse4 .cse9 .cse10))) (and (<= (+ .cse0 v_z_9) 4294967295) (= (+ (select .cse1 .cse2) 1) 0) (<= 0 v_z_9) (exists ((v_DerPreprocessor_1 Int) (v_y_9 Int)) (let ((.cse5 (* v_y_9 4294967296)) (.cse6 (* 4294967295 v_z_9)) (.cse3 (store (store .cse1 .cse2 v_DerPreprocessor_1) (+ .cse4 (- 17179869184) .cse9 .cse10) (- 1)))) (and (= (select .cse3 0) 0) (= (select .cse3 (+ .cse4 (* 17179869184 v_y_9) (* 17179869180 v_z_9))) 1) (<= 0 (+ .cse5 .cse6)) (= 0 (select .cse3 4)) (<= (+ .cse5 1 .cse6) c_~ARR_SIZE~0) (= (select .cse3 .cse7) 0) (= (select .cse3 .cse8) 0)))))))) (<= 0 |ULTIMATE.start_main_~index1~0#1|))) (exists ((|ULTIMATE.start_main_~index1~0#1| Int)) (let ((.cse18 (* |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0))) (let ((.cse13 (* |ULTIMATE.start_main_~index1~0#1| .cse11)) (.cse16 (* (mod (+ .cse19 c_~ARR_SIZE~0 .cse18 1) 4294967296) 4))) (let ((.cse15 (+ .cse13 .cse16))) (and (<= (+ |ULTIMATE.start_main_~index1~0#1| 1) c_~ARR_SIZE~0) (exists ((v_DerPreprocessor_1 Int)) (let ((.cse12 (store (store .cse1 .cse15 v_DerPreprocessor_1) (+ .cse13 .cse16 (- 17179869184)) (- 1)))) (and (= (select .cse12 (+ .cse13 (* (* (- 1) |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) 4) .cse14 (- 8))) 1) (= (select .cse12 .cse8) 0) (= (select .cse12 0) 0) (= (select .cse12 4) 0)))) (<= .cse17 (+ c_~ARR_SIZE~0 .cse18 1)) (= (+ (select .cse1 .cse15) 1) 0)))))) (exists ((|ULTIMATE.start_main_~index1~0#1| Int)) (let ((.cse24 (* |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0))) (let ((.cse23 (* (mod (+ .cse19 c_~ARR_SIZE~0 .cse24) 4294967296) 4)) (.cse21 (* |ULTIMATE.start_main_~index1~0#1| .cse11))) (let ((.cse22 (+ .cse23 .cse21))) (and (<= (+ |ULTIMATE.start_main_~index1~0#1| 1) c_~ARR_SIZE~0) (exists ((v_DerPreprocessor_1 Int)) (let ((.cse20 (store (store .cse1 .cse22 v_DerPreprocessor_1) (+ .cse23 .cse21 (- 17179869184)) (- 1)))) (and (= (select .cse20 (+ .cse21 (- 4) (* (* (- 1) |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) 4) .cse14)) 1) (= (select .cse20 .cse7) 0) (= 0 (select .cse20 0)) (= (select .cse20 4) 0)))) (<= .cse17 (+ c_~ARR_SIZE~0 .cse24)) (= (+ (select .cse1 .cse22) 1) 0)))))) (exists ((|ULTIMATE.start_main_~index1~0#1| Int)) (and (<= (+ |ULTIMATE.start_main_~index1~0#1| 1) c_~ARR_SIZE~0) (<= 0 |ULTIMATE.start_main_~index1~0#1|) (exists ((v_z_9 Int)) (let ((.cse29 (* |ULTIMATE.start_main_~index1~0#1| .cse11)) (.cse30 (* v_z_9 4))) (let ((.cse25 (+ .cse29 (- 17179869184) .cse30 .cse10))) (and (<= v_z_9 4294967295) (<= 4294967296 (+ .cse0 v_z_9)) (= (+ (select .cse1 .cse25) 1) 0) (exists ((v_DerPreprocessor_1 Int) (v_y_9 Int)) (let ((.cse27 (* v_y_9 4294967296)) (.cse28 (* 4294967295 v_z_9)) (.cse26 (store (store .cse1 .cse25 v_DerPreprocessor_1) (+ .cse29 .cse30 .cse10 (- 34359738368)) (- 1)))) (and (= (select .cse26 .cse7) 0) (<= 0 (+ .cse27 .cse28)) (<= (+ .cse27 1 .cse28) c_~ARR_SIZE~0) (= (select .cse26 .cse8) 0) (= (select .cse26 4) 0) (= (select .cse26 (+ .cse29 (* 17179869184 v_y_9) (* 17179869180 v_z_9))) 1) (= (select .cse26 0) 0)))))))))) (exists ((|ULTIMATE.start_main_~index1~0#1| Int)) (let ((.cse31 (* |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0))) (let ((.cse34 (* |ULTIMATE.start_main_~index1~0#1| .cse11)) (.cse35 (* (mod (+ c_~ARR_SIZE~0 4294967294 .cse31) 4294967296) 4))) (let ((.cse32 (+ .cse34 .cse35))) (and (<= .cse31 1) (<= 0 |ULTIMATE.start_main_~index1~0#1|) (= (+ (select .cse1 .cse32) 1) 0) (exists ((v_DerPreprocessor_1 Int)) (let ((.cse33 (store (store .cse1 .cse32 v_DerPreprocessor_1) (+ .cse34 (- 17179869184) .cse35) (- 1)))) (and (= (select .cse33 .cse7) 0) (= (select .cse33 0) 0) (= (select .cse33 .cse8) 0) (= (select .cse33 (+ .cse34 (* (* (- 1) |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) 4) 4)) 1))))))))) (exists ((|ULTIMATE.start_main_~index1~0#1| Int)) (let ((.cse40 (* |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0))) (let ((.cse37 (* |ULTIMATE.start_main_~index1~0#1| .cse11)) (.cse39 (* (mod (+ c_~ARR_SIZE~0 4294967295 .cse40) 4294967296) 4))) (let ((.cse38 (+ .cse37 .cse39))) (and (exists ((v_DerPreprocessor_1 Int)) (let ((.cse36 (store (store .cse1 .cse38 v_DerPreprocessor_1) (+ .cse37 (- 17179869184) .cse39) (- 1)))) (and (= 0 (select .cse36 .cse8)) (= (select .cse36 4) 0) (= (select .cse36 (+ .cse37 (* (* (- 1) |ULTIMATE.start_main_~index1~0#1| c_~ARR_SIZE~0) 4))) 1) (= 0 (select .cse36 .cse7))))) (= (+ (select .cse1 .cse38) 1) 0) (<= 0 |ULTIMATE.start_main_~index1~0#1|) (<= .cse40 0)))))))))) (= |c_ULTIMATE.start_main_~#array~0#1.offset| 0) (= |c_ULTIMATE.start_main_~sum~0#1| 0) (= |c_ULTIMATE.start_main_~column~0#1| 0)) is different from false [2023-11-06 23:09:09,240 WARN L293 SmtUtils]: Spent 8.85s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 23:09:38,258 WARN L293 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-06 23:10:23,611 WARN L293 SmtUtils]: Spent 7.29s on a formula simplification that was a NOOP. DAG size: 210 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)