./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sina3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/sina3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2aebf3cfbf85ca5d76e40b9ce94a108ab82985532ad1ea09b88a009b3e11ff5a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:56:51,119 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:56:51,219 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:56:51,225 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:56:51,226 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:56:51,254 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:56:51,255 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:56:51,255 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:56:51,256 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:56:51,257 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:56:51,258 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:56:51,258 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:56:51,259 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:56:51,260 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:56:51,260 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:56:51,261 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:56:51,261 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:56:51,262 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:56:51,263 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:56:51,263 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:56:51,264 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:56:51,265 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:56:51,265 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:56:51,266 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:56:51,266 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:56:51,267 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:56:51,267 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:56:51,268 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:56:51,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:51,269 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:56:51,269 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:56:51,270 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:56:51,270 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:56:51,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:56:51,271 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:56:51,272 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:56:51,272 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:56:51,273 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:56:51,273 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:56:51,274 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_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2aebf3cfbf85ca5d76e40b9ce94a108ab82985532ad1ea09b88a009b3e11ff5a [2023-11-19 07:56:51,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:56:51,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:56:51,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:56:51,633 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:56:51,633 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:56:51,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/array-fpi/sina3.c [2023-11-19 07:56:54,769 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:56:54,989 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:56:54,990 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/sv-benchmarks/c/array-fpi/sina3.c [2023-11-19 07:56:55,002 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/data/656fe34ff/2733a1a416d34be4a388d040d804b435/FLAG8712e7500 [2023-11-19 07:56:55,023 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/data/656fe34ff/2733a1a416d34be4a388d040d804b435 [2023-11-19 07:56:55,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:56:55,034 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:56:55,038 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:55,038 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:56:55,044 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:56:55,045 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,046 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1113700a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55, skipping insertion in model container [2023-11-19 07:56:55,046 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,072 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:56:55,329 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_a060c121-d9d5-49f7-9d03-50408d921e86/sv-benchmarks/c/array-fpi/sina3.c[588,601] [2023-11-19 07:56:55,365 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:55,380 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:56:55,396 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_a060c121-d9d5-49f7-9d03-50408d921e86/sv-benchmarks/c/array-fpi/sina3.c[588,601] [2023-11-19 07:56:55,422 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:56:55,440 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:56:55,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55 WrapperNode [2023-11-19 07:56:55,441 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:56:55,442 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:55,443 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:56:55,443 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:56:55,451 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,470 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,505 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 104 [2023-11-19 07:56:55,506 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:56:55,506 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:56:55,507 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:56:55,507 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:56:55,516 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,524 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,524 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,539 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,549 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,556 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,558 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,560 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:56:55,564 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:56:55,564 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:56:55,565 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:56:55,566 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (1/1) ... [2023-11-19 07:56:55,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:56:55,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:55,606 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:56:55,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:56:55,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:56:55,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:56:55,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:56:55,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:56:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:56:55,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:56:55,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:56:55,655 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:56:55,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:56:55,729 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:56:55,731 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:56:55,948 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:56:55,962 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:56:55,964 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-19 07:56:55,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:55 BoogieIcfgContainer [2023-11-19 07:56:55,969 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:56:55,975 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:56:55,975 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:56:55,979 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:56:55,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:56:55" (1/3) ... [2023-11-19 07:56:55,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d1dc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:55, skipping insertion in model container [2023-11-19 07:56:55,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:56:55" (2/3) ... [2023-11-19 07:56:55,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d1dc27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:56:55, skipping insertion in model container [2023-11-19 07:56:55,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:56:55" (3/3) ... [2023-11-19 07:56:55,983 INFO L112 eAbstractionObserver]: Analyzing ICFG sina3.c [2023-11-19 07:56:56,003 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:56:56,004 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:56:56,051 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:56:56,059 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7996e8ac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:56:56,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:56:56,064 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:56,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 07:56:56,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:56,071 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:56,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:56,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:56,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1389277550, now seen corresponding path program 1 times [2023-11-19 07:56:56,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:56,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320456519] [2023-11-19 07:56:56,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:56,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:56,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:56,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320456519] [2023-11-19 07:56:56,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320456519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:56,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:56,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:56,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594394065] [2023-11-19 07:56:56,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:56,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:56:56,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:56,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:56:56,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:56:56,310 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.56) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:56,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:56,327 INFO L93 Difference]: Finished difference Result 50 states and 72 transitions. [2023-11-19 07:56:56,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:56:56,329 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-19 07:56:56,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:56,337 INFO L225 Difference]: With dead ends: 50 [2023-11-19 07:56:56,337 INFO L226 Difference]: Without dead ends: 23 [2023-11-19 07:56:56,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:56:56,344 INFO L413 NwaCegarLoop]: 32 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, 32 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 [2023-11-19 07:56:56,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:56:56,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-19 07:56:56,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-19 07:56:56,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:56,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-11-19 07:56:56,379 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2023-11-19 07:56:56,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:56,380 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-11-19 07:56:56,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:56,381 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-11-19 07:56:56,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 07:56:56,382 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:56,383 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:56,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:56:56,384 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:56,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:56,385 INFO L85 PathProgramCache]: Analyzing trace with hash 796930410, now seen corresponding path program 1 times [2023-11-19 07:56:56,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:56,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634051787] [2023-11-19 07:56:56,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:56,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:56,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:56,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:56,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634051787] [2023-11-19 07:56:56,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634051787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:56,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:56,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:56:56,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090069215] [2023-11-19 07:56:56,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:56,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:56:56,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:56,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:56:56,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:56:56,666 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:56,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:56,765 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2023-11-19 07:56:56,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:56:56,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-19 07:56:56,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:56,767 INFO L225 Difference]: With dead ends: 53 [2023-11-19 07:56:56,768 INFO L226 Difference]: Without dead ends: 37 [2023-11-19 07:56:56,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:56:56,770 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 45 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:56,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 17 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:56:56,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-19 07:56:56,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 27. [2023-11-19 07:56:56,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:56,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2023-11-19 07:56:56,778 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 16 [2023-11-19 07:56:56,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:56,778 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2023-11-19 07:56:56,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:56:56,779 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2023-11-19 07:56:56,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 07:56:56,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:56,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:56,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:56:56,783 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:56,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:56,785 INFO L85 PathProgramCache]: Analyzing trace with hash 495241442, now seen corresponding path program 1 times [2023-11-19 07:56:56,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:56,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715069026] [2023-11-19 07:56:56,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:56,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:59,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:59,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:59,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715069026] [2023-11-19 07:56:59,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715069026] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:59,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912533918] [2023-11-19 07:56:59,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:59,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:59,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:59,070 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:59,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:56:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:59,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-19 07:56:59,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:59,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-19 07:56:59,408 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:56:59,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2023-11-19 07:56:59,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2023-11-19 07:56:59,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-11-19 07:56:59,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2023-11-19 07:57:00,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2023-11-19 07:57:00,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:00,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:01,076 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:57:01,077 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:57:01,078 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:57:01,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:01,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912533918] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:01,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:01,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 33 [2023-11-19 07:57:01,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114977870] [2023-11-19 07:57:01,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:01,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-19 07:57:01,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:01,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-19 07:57:01,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2023-11-19 07:57:01,095 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 33 states, 33 states have (on average 1.696969696969697) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:02,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:02,983 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2023-11-19 07:57:02,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-19 07:57:02,983 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.696969696969697) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-19 07:57:02,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:02,986 INFO L225 Difference]: With dead ends: 78 [2023-11-19 07:57:02,987 INFO L226 Difference]: Without dead ends: 76 [2023-11-19 07:57:02,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=372, Invalid=1884, Unknown=0, NotChecked=0, Total=2256 [2023-11-19 07:57:02,990 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 161 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:02,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 150 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:57:02,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-19 07:57:03,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 46. [2023-11-19 07:57:03,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 45 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:03,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2023-11-19 07:57:03,010 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 24 [2023-11-19 07:57:03,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:03,010 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2023-11-19 07:57:03,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.696969696969697) internal successors, (56), 33 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:03,011 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2023-11-19 07:57:03,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 07:57:03,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:03,013 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:03,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:03,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:03,227 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:03,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:03,228 INFO L85 PathProgramCache]: Analyzing trace with hash 924425184, now seen corresponding path program 2 times [2023-11-19 07:57:03,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:03,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410355294] [2023-11-19 07:57:03,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:03,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:03,360 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:57:03,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:03,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410355294] [2023-11-19 07:57:03,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410355294] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:03,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559084743] [2023-11-19 07:57:03,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:57:03,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:03,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:03,365 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:03,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:57:03,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:57:03,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:03,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:57:03,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:03,523 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:57:03,523 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:03,591 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:57:03,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559084743] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:03,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:03,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-19 07:57:03,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902719500] [2023-11-19 07:57:03,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:03,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:57:03,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:03,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:57:03,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:57:03,596 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:04,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:04,012 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2023-11-19 07:57:04,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:57:04,015 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-19 07:57:04,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:04,016 INFO L225 Difference]: With dead ends: 99 [2023-11-19 07:57:04,016 INFO L226 Difference]: Without dead ends: 51 [2023-11-19 07:57:04,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2023-11-19 07:57:04,019 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 155 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:04,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 94 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:57:04,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-19 07:57:04,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 35. [2023-11-19 07:57:04,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:04,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2023-11-19 07:57:04,034 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 26 [2023-11-19 07:57:04,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:04,035 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2023-11-19 07:57:04,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:04,035 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2023-11-19 07:57:04,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 07:57:04,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:04,037 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:04,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:04,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:04,262 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:04,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:04,263 INFO L85 PathProgramCache]: Analyzing trace with hash -826292134, now seen corresponding path program 3 times [2023-11-19 07:57:04,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:04,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770169591] [2023-11-19 07:57:04,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:04,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:06,634 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:06,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:06,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770169591] [2023-11-19 07:57:06,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770169591] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:06,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326135697] [2023-11-19 07:57:06,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:57:06,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:06,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:06,637 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:06,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:57:06,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 07:57:06,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:06,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-19 07:57:06,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:06,862 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:57:06,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2023-11-19 07:57:06,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2023-11-19 07:57:06,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2023-11-19 07:57:07,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-11-19 07:57:07,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-11-19 07:57:07,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:57:07,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2023-11-19 07:57:08,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2023-11-19 07:57:08,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2023-11-19 07:57:08,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2023-11-19 07:57:08,922 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:57:08,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 34 [2023-11-19 07:57:09,195 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:09,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:18,078 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:18,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326135697] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:18,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:18,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23, 22] total 62 [2023-11-19 07:57:18,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301881044] [2023-11-19 07:57:18,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:18,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-11-19 07:57:18,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:18,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-11-19 07:57:18,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=3377, Unknown=2, NotChecked=0, Total=3782 [2023-11-19 07:57:18,092 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 62 states, 62 states have (on average 1.403225806451613) internal successors, (87), 62 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:22,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-19 07:57:24,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-19 07:57:37,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-19 07:57:41,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:41,062 INFO L93 Difference]: Finished difference Result 126 states and 143 transitions. [2023-11-19 07:57:41,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-19 07:57:41,063 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 1.403225806451613) internal successors, (87), 62 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-11-19 07:57:41,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:41,065 INFO L225 Difference]: With dead ends: 126 [2023-11-19 07:57:41,065 INFO L226 Difference]: Without dead ends: 105 [2023-11-19 07:57:41,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3211 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=1093, Invalid=9005, Unknown=2, NotChecked=0, Total=10100 [2023-11-19 07:57:41,071 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 264 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 152 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 1344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:41,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 381 Invalid, 1344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1189 Invalid, 3 Unknown, 0 Unchecked, 12.3s Time] [2023-11-19 07:57:41,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-19 07:57:41,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 59. [2023-11-19 07:57:41,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1379310344827587) internal successors, (66), 58 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:41,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2023-11-19 07:57:41,095 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 32 [2023-11-19 07:57:41,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:41,096 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2023-11-19 07:57:41,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 1.403225806451613) internal successors, (87), 62 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:41,097 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2023-11-19 07:57:41,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 07:57:41,098 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:41,098 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:41,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:41,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:41,320 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:41,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:41,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1205583320, now seen corresponding path program 4 times [2023-11-19 07:57:41,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:41,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249012318] [2023-11-19 07:57:41,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:41,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:41,479 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:57:41,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:41,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249012318] [2023-11-19 07:57:41,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249012318] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:41,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669072696] [2023-11-19 07:57:41,481 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:57:41,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:41,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:41,485 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:41,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:57:41,613 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:57:41,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:57:41,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:57:41,617 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:41,694 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:57:41,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:41,773 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:57:41,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669072696] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:41,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:41,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-11-19 07:57:41,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033206193] [2023-11-19 07:57:41,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:41,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:57:41,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:41,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:57:41,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:57:41,779 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:42,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:57:42,182 INFO L93 Difference]: Finished difference Result 122 states and 135 transitions. [2023-11-19 07:57:42,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:57:42,183 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-11-19 07:57:42,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:57:42,184 INFO L225 Difference]: With dead ends: 122 [2023-11-19 07:57:42,184 INFO L226 Difference]: Without dead ends: 103 [2023-11-19 07:57:42,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:57:42,186 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 113 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:57:42,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 121 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:57:42,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-19 07:57:42,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 64. [2023-11-19 07:57:42,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.126984126984127) internal successors, (71), 63 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:42,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2023-11-19 07:57:42,213 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 34 [2023-11-19 07:57:42,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:57:42,213 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 71 transitions. [2023-11-19 07:57:42,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:42,213 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2023-11-19 07:57:42,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 07:57:42,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:57:42,215 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 07:57:42,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:57:42,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:57:42,428 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:57:42,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:42,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1737020496, now seen corresponding path program 1 times [2023-11-19 07:57:42,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:42,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700022544] [2023-11-19 07:57:42,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:42,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:44,432 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:57:44,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:44,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700022544] [2023-11-19 07:57:44,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700022544] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:57:44,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233662060] [2023-11-19 07:57:44,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:44,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:57:44,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:44,434 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:57:44,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a060c121-d9d5-49f7-9d03-50408d921e86/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:57:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:44,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-19 07:57:44,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:57:44,558 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:57:44,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2023-11-19 07:57:44,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2023-11-19 07:57:44,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2023-11-19 07:57:44,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-11-19 07:57:45,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2023-11-19 07:57:45,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-11-19 07:57:45,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2023-11-19 07:57:45,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 41 [2023-11-19 07:57:46,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2023-11-19 07:57:46,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-11-19 07:57:47,110 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:47,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:57:47,536 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_267 (Array Int Int))) (= (select (store v_ArrVal_267 (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) 8 |c_ULTIMATE.start_main_~a~0#1.offset|) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_267))) (+ (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 4 |c_ULTIMATE.start_main_~b~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (+ c_~N~0 1))) is different from false [2023-11-19 07:57:47,690 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_267 (Array Int Int))) (= (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|)))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_267))) (+ (select (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (+ c_~N~0 1))) is different from false [2023-11-19 07:57:47,703 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_267 (Array Int Int))) (= (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_267))) (+ (select (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (+ c_~N~0 1))) is different from false [2023-11-19 07:57:47,721 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_267 (Array Int Int))) (= (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse4 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (+ .cse2 .cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse4 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_267))) (+ (select (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (+ c_~N~0 1))) is different from false [2023-11-19 07:57:47,932 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_267 (Array Int Int))) (= (let ((.cse0 (store (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)))) (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse3 (select (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse4 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse3 (select (select (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) .cse4)))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_267))) (+ (select (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (+ c_~N~0 1))) is different from false [2023-11-19 07:57:47,957 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_267 (Array Int Int))) (= (let ((.cse0 (store (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 4 |c_ULTIMATE.start_main_~b~0#1.offset|) 1)))) (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse4 (select (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ (select (select (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) .cse3 .cse4)))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_267))) (+ (select (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (+ c_~N~0 1))) is different from false [2023-11-19 07:57:47,973 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:57:47,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 285 treesize of output 169 [2023-11-19 07:57:47,993 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (v_ArrVal_267 (Array Int Int))) (or (= (let ((.cse0 (store (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_arrayElimArr_1))) (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse3 (select (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse4 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse3 .cse4 (select (select (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_267))) (+ (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ c_~N~0 1)) (not (= (select v_arrayElimArr_1 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 4 |c_ULTIMATE.start_main_~b~0#1.offset|)) 1)))) is different from false [2023-11-19 07:57:48,027 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (v_ArrVal_267 (Array Int Int))) (let ((.cse1 (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|))) (or (= (let ((.cse0 (store (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_arrayElimArr_1))) (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse4 (select (select .cse2 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse4 .cse5 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_267))) (+ (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) .cse1) (select (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ c_~N~0 1)) (not (= (select v_arrayElimArr_1 .cse1) 1))))) is different from false [2023-11-19 07:57:48,436 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (v_ArrVal_267 (Array Int Int))) (let ((.cse0 (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|))) (or (not (= (select v_arrayElimArr_1 .cse0) 1)) (= (let ((.cse1 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_arrayElimArr_1) |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) |c_ULTIMATE.start_main_~b~0#1.base| v_arrayElimArr_1))) (let ((.cse2 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse5 (select (select .cse4 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) .cse5)))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_267))) (+ (select (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse1 |c_ULTIMATE.start_main_~b~0#1.base|) .cse0))) (+ 2 |c_ULTIMATE.start_main_~i~0#1|))))) is different from false [2023-11-19 07:57:48,464 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (v_ArrVal_267 (Array Int Int))) (let ((.cse1 (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|))) (or (= (let ((.cse0 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_arrayElimArr_1) |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse4 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) 8 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)) |c_ULTIMATE.start_main_~b~0#1.base| v_arrayElimArr_1))) (let ((.cse2 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) .cse5)))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_267))) (+ (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) .cse1) (select (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ 3 |c_ULTIMATE.start_main_~i~0#1|)) (not (= (select v_arrayElimArr_1 .cse1) 1))))) is different from false [2023-11-19 07:57:48,503 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (v_ArrVal_267 (Array Int Int))) (let ((.cse0 (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|))) (or (not (= (select v_arrayElimArr_1 .cse0) 1)) (= (+ 3 |c_ULTIMATE.start_main_~i~0#1|) (let ((.cse1 (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_arrayElimArr_1) |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse5 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse6 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse6 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (+ .cse6 8 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) |c_ULTIMATE.start_main_~b~0#1.base| v_arrayElimArr_1))) (let ((.cse2 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse3 .cse4 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_267))) (+ (select (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse1 |c_ULTIMATE.start_main_~b~0#1.base|) .cse0))))))) is different from false [2023-11-19 07:57:48,522 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 14 not checked. [2023-11-19 07:57:48,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233662060] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:57:48,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:57:48,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 23] total 62 [2023-11-19 07:57:48,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128980786] [2023-11-19 07:57:48,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:57:48,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-11-19 07:57:48,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:48,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-11-19 07:57:48,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=2300, Unknown=33, NotChecked=1188, Total=3782 [2023-11-19 07:57:48,527 INFO L87 Difference]: Start difference. First operand 64 states and 71 transitions. Second operand has 62 states, 62 states have (on average 1.564516129032258) internal successors, (97), 62 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)