./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/cohencu-ll.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_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/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_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/cohencu-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/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_79ae6858-5cc6-40ef-b701-3fac57a13459/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 bf57d72e341b105161cbeacf29e58db93d2b67f8e0e097e4dbed74551cbdcfff --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:03:56,909 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:03:57,036 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:03:57,046 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:03:57,047 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:03:57,086 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:03:57,087 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:03:57,088 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:03:57,089 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:03:57,094 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:03:57,096 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:03:57,096 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:03:57,097 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:03:57,099 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:03:57,099 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:03:57,099 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:03:57,100 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:03:57,100 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:03:57,101 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:03:57,101 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:03:57,102 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:03:57,102 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:03:57,103 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:03:57,103 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:03:57,104 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:03:57,105 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:03:57,105 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:03:57,106 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:03:57,106 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:03:57,107 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:03:57,108 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:03:57,108 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:03:57,109 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:03:57,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:03:57,109 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:03:57,109 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:03:57,110 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:03:57,110 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:03:57,110 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:03:57,110 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_79ae6858-5cc6-40ef-b701-3fac57a13459/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf57d72e341b105161cbeacf29e58db93d2b67f8e0e097e4dbed74551cbdcfff [2023-11-19 08:03:57,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:03:57,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:03:57,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:03:57,485 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:03:57,486 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:03:57,488 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/nla-digbench/cohencu-ll.c [2023-11-19 08:04:00,631 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:04:00,866 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:04:00,867 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/sv-benchmarks/c/nla-digbench/cohencu-ll.c [2023-11-19 08:04:00,875 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/data/697d0cd4f/3320e2f8564348b998d5785a80b4f117/FLAGa41194e3f [2023-11-19 08:04:00,891 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/data/697d0cd4f/3320e2f8564348b998d5785a80b4f117 [2023-11-19 08:04:00,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:04:00,896 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:04:00,898 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:00,898 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:04:00,910 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:04:00,911 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:00" (1/1) ... [2023-11-19 08:04:00,912 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4bd3c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:00, skipping insertion in model container [2023-11-19 08:04:00,912 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:00" (1/1) ... [2023-11-19 08:04:00,943 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:04:01,108 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_79ae6858-5cc6-40ef-b701-3fac57a13459/sv-benchmarks/c/nla-digbench/cohencu-ll.c[588,601] [2023-11-19 08:04:01,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:01,175 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:04:01,192 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_79ae6858-5cc6-40ef-b701-3fac57a13459/sv-benchmarks/c/nla-digbench/cohencu-ll.c[588,601] [2023-11-19 08:04:01,216 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:04:01,237 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:04:01,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:01 WrapperNode [2023-11-19 08:04:01,238 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:04:01,240 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:01,240 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:04:01,240 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:04:01,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:01" (1/1) ... [2023-11-19 08:04:01,270 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:01" (1/1) ... [2023-11-19 08:04:01,300 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2023-11-19 08:04:01,301 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:04:01,302 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:04:01,302 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:04:01,303 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:04:01,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:01" (1/1) ... [2023-11-19 08:04:01,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:01" (1/1) ... [2023-11-19 08:04:01,315 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:01" (1/1) ... [2023-11-19 08:04:01,316 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:01" (1/1) ... [2023-11-19 08:04:01,331 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:01" (1/1) ... [2023-11-19 08:04:01,335 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:01" (1/1) ... [2023-11-19 08:04:01,341 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:01" (1/1) ... [2023-11-19 08:04:01,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:01" (1/1) ... [2023-11-19 08:04:01,344 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:04:01,346 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:04:01,346 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:04:01,346 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:04:01,348 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:01" (1/1) ... [2023-11-19 08:04:01,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:04:01,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:01,387 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:04:01,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:04:01,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:04:01,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:04:01,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:04:01,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:04:01,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 08:04:01,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 08:04:01,499 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:04:01,502 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:04:01,673 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:04:01,684 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:04:01,684 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:04:01,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:01 BoogieIcfgContainer [2023-11-19 08:04:01,688 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:04:01,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:04:01,691 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:04:01,702 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:04:01,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:04:00" (1/3) ... [2023-11-19 08:04:01,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6857072c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:01, skipping insertion in model container [2023-11-19 08:04:01,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:01" (2/3) ... [2023-11-19 08:04:01,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6857072c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:01, skipping insertion in model container [2023-11-19 08:04:01,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:01" (3/3) ... [2023-11-19 08:04:01,706 INFO L112 eAbstractionObserver]: Analyzing ICFG cohencu-ll.c [2023-11-19 08:04:01,729 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:04:01,730 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:04:01,811 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:04:01,851 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;@5c9bd187, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:04:01,851 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:04:01,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 08:04:01,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 08:04:01,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:01,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:01,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:01,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:01,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1823012769, now seen corresponding path program 1 times [2023-11-19 08:04:01,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:01,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909179559] [2023-11-19 08:04:01,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:01,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:02,062 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 08:04:02,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:02,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909179559] [2023-11-19 08:04:02,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909179559] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:02,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:02,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:04:02,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533153339] [2023-11-19 08:04:02,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:02,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:04:02,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:02,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:04:02,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:04:02,110 INFO L87 Difference]: Start difference. First operand has 25 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:02,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:02,145 INFO L93 Difference]: Finished difference Result 48 states and 85 transitions. [2023-11-19 08:04:02,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:04:02,147 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 08:04:02,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:02,157 INFO L225 Difference]: With dead ends: 48 [2023-11-19 08:04:02,157 INFO L226 Difference]: Without dead ends: 21 [2023-11-19 08:04:02,161 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 08:04:02,166 INFO L413 NwaCegarLoop]: 35 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, 35 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 08:04:02,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:04:02,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-19 08:04:02,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-19 08:04:02,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 08:04:02,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2023-11-19 08:04:02,244 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 7 [2023-11-19 08:04:02,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:02,245 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 31 transitions. [2023-11-19 08:04:02,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:02,246 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 31 transitions. [2023-11-19 08:04:02,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 08:04:02,247 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:02,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:02,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:04:02,248 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:02,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:02,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1811632607, now seen corresponding path program 1 times [2023-11-19 08:04:02,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:02,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946891799] [2023-11-19 08:04:02,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:02,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:02,548 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 08:04:02,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:02,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946891799] [2023-11-19 08:04:02,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946891799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:02,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:02,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:04:02,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040581334] [2023-11-19 08:04:02,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:02,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:04:02,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:02,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:04:02,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:02,554 INFO L87 Difference]: Start difference. First operand 21 states and 31 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:02,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:02,690 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2023-11-19 08:04:02,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:04:02,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 08:04:02,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:02,693 INFO L225 Difference]: With dead ends: 27 [2023-11-19 08:04:02,693 INFO L226 Difference]: Without dead ends: 25 [2023-11-19 08:04:02,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:04:02,696 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:02,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 78 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:04:02,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-19 08:04:02,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-11-19 08:04:02,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 08:04:02,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2023-11-19 08:04:02,715 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 7 [2023-11-19 08:04:02,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:02,716 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2023-11-19 08:04:02,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:02,716 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2023-11-19 08:04:02,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 08:04:02,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:02,717 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:02,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:04:02,718 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:02,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:02,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1582559355, now seen corresponding path program 1 times [2023-11-19 08:04:02,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:02,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961901289] [2023-11-19 08:04:02,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:02,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:02,735 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:02,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562708429] [2023-11-19 08:04:02,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:02,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:02,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:02,738 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:02,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:04:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:02,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:04:02,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:02,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:04:02,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:02,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:02,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961901289] [2023-11-19 08:04:02,946 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:04:02,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562708429] [2023-11-19 08:04:02,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562708429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:02,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:02,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:04:02,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806905454] [2023-11-19 08:04:02,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:02,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:04:02,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:02,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:04:02,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:02,956 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:04:03,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:03,098 INFO L93 Difference]: Finished difference Result 44 states and 63 transitions. [2023-11-19 08:04:03,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:04:03,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-19 08:04:03,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:03,100 INFO L225 Difference]: With dead ends: 44 [2023-11-19 08:04:03,101 INFO L226 Difference]: Without dead ends: 42 [2023-11-19 08:04:03,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:04:03,103 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:03,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 99 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:04:03,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-19 08:04:03,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2023-11-19 08:04:03,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 08:04:03,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2023-11-19 08:04:03,122 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 12 [2023-11-19 08:04:03,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:03,123 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2023-11-19 08:04:03,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 08:04:03,123 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2023-11-19 08:04:03,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 08:04:03,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:03,125 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:03,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:03,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:03,345 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:03,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:03,347 INFO L85 PathProgramCache]: Analyzing trace with hash 424345951, now seen corresponding path program 1 times [2023-11-19 08:04:03,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:03,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522076698] [2023-11-19 08:04:03,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:03,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:03,362 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:03,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599181807] [2023-11-19 08:04:03,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:03,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:03,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:03,371 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:03,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:04:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:03,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:04:03,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:03,540 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 08:04:03,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:03,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:03,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522076698] [2023-11-19 08:04:03,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:04:03,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599181807] [2023-11-19 08:04:03,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599181807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:03,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:03,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:04:03,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937890411] [2023-11-19 08:04:03,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:03,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:04:03,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:03,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:04:03,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:03,551 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 08:04:03,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:03,638 INFO L93 Difference]: Finished difference Result 48 states and 66 transitions. [2023-11-19 08:04:03,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:04:03,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2023-11-19 08:04:03,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:03,640 INFO L225 Difference]: With dead ends: 48 [2023-11-19 08:04:03,640 INFO L226 Difference]: Without dead ends: 46 [2023-11-19 08:04:03,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:04:03,642 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:03,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 96 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:04:03,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-19 08:04:03,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2023-11-19 08:04:03,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 21 states have internal predecessors, (22), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 08:04:03,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2023-11-19 08:04:03,663 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 57 transitions. Word has length 17 [2023-11-19 08:04:03,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:03,664 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 57 transitions. [2023-11-19 08:04:03,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 08:04:03,664 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 57 transitions. [2023-11-19 08:04:03,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 08:04:03,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:03,665 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:03,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:03,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-19 08:04:03,881 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:03,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:03,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1752711045, now seen corresponding path program 1 times [2023-11-19 08:04:03,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:03,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651008293] [2023-11-19 08:04:03,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:03,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:03,894 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:03,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1159345381] [2023-11-19 08:04:03,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:03,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:03,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:03,898 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:03,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:04:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:03,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 08:04:03,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:04,148 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 08:04:04,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:04:04,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:04,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651008293] [2023-11-19 08:04:04,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:04:04,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159345381] [2023-11-19 08:04:04,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159345381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:04:04,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:04:04,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:04:04,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230815196] [2023-11-19 08:04:04,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:04:04,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:04:04,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:04,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:04:04,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:04:04,154 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 08:04:04,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:04,268 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions. [2023-11-19 08:04:04,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:04:04,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2023-11-19 08:04:04,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:04,273 INFO L225 Difference]: With dead ends: 56 [2023-11-19 08:04:04,273 INFO L226 Difference]: Without dead ends: 44 [2023-11-19 08:04:04,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:04:04,279 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:04,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 88 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:04:04,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-19 08:04:04,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-19 08:04:04,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 08:04:04,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2023-11-19 08:04:04,307 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 22 [2023-11-19 08:04:04,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:04,308 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2023-11-19 08:04:04,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 08:04:04,308 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2023-11-19 08:04:04,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 08:04:04,310 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:04,310 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:04,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:04,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:04,531 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:04,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:04,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1303023551, now seen corresponding path program 1 times [2023-11-19 08:04:04,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:04,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36030359] [2023-11-19 08:04:04,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:04,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:04,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:04,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1896027400] [2023-11-19 08:04:04,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:04,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:04,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:04,549 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:04,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:04:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:04,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 08:04:04,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:04,825 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-19 08:04:04,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:04:05,016 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-19 08:04:05,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:05,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36030359] [2023-11-19 08:04:05,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:04:05,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896027400] [2023-11-19 08:04:05,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896027400] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:04:05,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:04:05,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-19 08:04:05,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420101999] [2023-11-19 08:04:05,017 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:04:05,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 08:04:05,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:05,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 08:04:05,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:04:05,019 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-19 08:04:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:05,287 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2023-11-19 08:04:05,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:04:05,287 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 39 [2023-11-19 08:04:05,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:05,289 INFO L225 Difference]: With dead ends: 67 [2023-11-19 08:04:05,289 INFO L226 Difference]: Without dead ends: 65 [2023-11-19 08:04:05,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-11-19 08:04:05,291 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 25 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:05,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 72 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:04:05,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-19 08:04:05,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 52. [2023-11-19 08:04:05,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 08:04:05,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2023-11-19 08:04:05,314 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 39 [2023-11-19 08:04:05,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:05,315 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2023-11-19 08:04:05,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-19 08:04:05,315 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2023-11-19 08:04:05,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-19 08:04:05,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:05,317 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:05,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:05,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:05,531 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:05,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:05,531 INFO L85 PathProgramCache]: Analyzing trace with hash 190158181, now seen corresponding path program 2 times [2023-11-19 08:04:05,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:05,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571114039] [2023-11-19 08:04:05,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:05,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:05,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:05,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1510560272] [2023-11-19 08:04:05,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:04:05,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:05,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:05,550 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:05,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:04:05,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 08:04:05,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:04:05,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 08:04:05,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:05,778 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-19 08:04:05,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:04:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 23 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-19 08:04:05,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:05,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571114039] [2023-11-19 08:04:05,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:04:05,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510560272] [2023-11-19 08:04:05,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510560272] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:04:05,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:04:05,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-19 08:04:05,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867588339] [2023-11-19 08:04:05,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:04:05,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 08:04:05,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:05,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 08:04:05,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:04:05,966 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-19 08:04:08,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-19 08:04:08,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:08,386 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2023-11-19 08:04:08,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 08:04:08,387 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 44 [2023-11-19 08:04:08,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:08,390 INFO L225 Difference]: With dead ends: 82 [2023-11-19 08:04:08,390 INFO L226 Difference]: Without dead ends: 80 [2023-11-19 08:04:08,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2023-11-19 08:04:08,392 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 21 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 54 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:08,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 136 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 167 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2023-11-19 08:04:08,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-19 08:04:08,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2023-11-19 08:04:08,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 40 states have (on average 1.075) internal successors, (43), 43 states have internal predecessors, (43), 27 states have call successors, (27), 10 states have call predecessors, (27), 10 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-19 08:04:08,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 96 transitions. [2023-11-19 08:04:08,435 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 96 transitions. Word has length 44 [2023-11-19 08:04:08,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:08,436 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 96 transitions. [2023-11-19 08:04:08,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 11 states have internal predecessors, (22), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-19 08:04:08,436 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 96 transitions. [2023-11-19 08:04:08,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-19 08:04:08,437 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:08,438 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:08,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:08,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:08,659 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:08,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:08,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1004060865, now seen corresponding path program 3 times [2023-11-19 08:04:08,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:08,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803978396] [2023-11-19 08:04:08,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:08,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:08,671 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:08,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [193112513] [2023-11-19 08:04:08,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 08:04:08,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:08,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:08,680 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:08,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:04:08,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 08:04:08,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:04:08,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 08:04:08,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:08,877 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-19 08:04:08,877 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:04:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-19 08:04:09,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:09,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803978396] [2023-11-19 08:04:09,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:04:09,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193112513] [2023-11-19 08:04:09,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193112513] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:04:09,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:04:09,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-19 08:04:09,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366887088] [2023-11-19 08:04:09,006 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:04:09,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:04:09,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:09,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:04:09,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:04:09,007 INFO L87 Difference]: Start difference. First operand 78 states and 96 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-19 08:04:09,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:09,294 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2023-11-19 08:04:09,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:04:09,295 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 49 [2023-11-19 08:04:09,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:09,296 INFO L225 Difference]: With dead ends: 94 [2023-11-19 08:04:09,296 INFO L226 Difference]: Without dead ends: 82 [2023-11-19 08:04:09,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:04:09,298 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:09,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 180 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:04:09,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-19 08:04:09,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 65. [2023-11-19 08:04:09,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 08:04:09,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2023-11-19 08:04:09,324 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 49 [2023-11-19 08:04:09,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:09,324 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2023-11-19 08:04:09,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 8 states have internal predecessors, (17), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-19 08:04:09,325 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2023-11-19 08:04:09,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 08:04:09,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:09,326 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:09,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:09,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:09,541 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:09,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:09,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1898506858, now seen corresponding path program 1 times [2023-11-19 08:04:09,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:09,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435920054] [2023-11-19 08:04:09,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:09,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:09,552 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:09,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006028685] [2023-11-19 08:04:09,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:09,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:09,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:09,554 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:09,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:04:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:09,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-19 08:04:09,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:10,053 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 21 proven. 38 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-19 08:04:10,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:04:10,347 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 23 proven. 36 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-19 08:04:10,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:10,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435920054] [2023-11-19 08:04:10,348 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:04:10,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006028685] [2023-11-19 08:04:10,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006028685] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:04:10,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:04:10,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-11-19 08:04:10,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974153696] [2023-11-19 08:04:10,349 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:04:10,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 08:04:10,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:10,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 08:04:10,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-19 08:04:10,351 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 14 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 7 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2023-11-19 08:04:10,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:10,638 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2023-11-19 08:04:10,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 08:04:10,639 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 7 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) Word has length 65 [2023-11-19 08:04:10,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:10,641 INFO L225 Difference]: With dead ends: 95 [2023-11-19 08:04:10,641 INFO L226 Difference]: Without dead ends: 91 [2023-11-19 08:04:10,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-11-19 08:04:10,642 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 17 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:10,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 155 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:04:10,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-19 08:04:10,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 67. [2023-11-19 08:04:10,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 42 states have internal predecessors, (43), 13 states have call successors, (13), 12 states have call predecessors, (13), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 08:04:10,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2023-11-19 08:04:10,680 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 65 [2023-11-19 08:04:10,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:10,681 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2023-11-19 08:04:10,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 7 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2023-11-19 08:04:10,681 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2023-11-19 08:04:10,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-19 08:04:10,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:10,683 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:10,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:10,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:10,904 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:10,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:10,905 INFO L85 PathProgramCache]: Analyzing trace with hash 161977518, now seen corresponding path program 1 times [2023-11-19 08:04:10,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:10,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377793990] [2023-11-19 08:04:10,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:10,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:10,920 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:10,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [143135159] [2023-11-19 08:04:10,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:10,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:10,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:10,929 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:10,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 08:04:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:04:10,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-19 08:04:10,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:11,360 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 23 proven. 41 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-19 08:04:11,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:04:11,645 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 23 proven. 41 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-19 08:04:11,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:11,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377793990] [2023-11-19 08:04:11,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:04:11,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143135159] [2023-11-19 08:04:11,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143135159] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:04:11,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:04:11,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-11-19 08:04:11,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679088091] [2023-11-19 08:04:11,647 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:04:11,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 08:04:11,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:11,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 08:04:11,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-19 08:04:11,649 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 7 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 6 states have call predecessors, (24), 7 states have call successors, (24) [2023-11-19 08:04:12,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:12,169 INFO L93 Difference]: Finished difference Result 114 states and 132 transitions. [2023-11-19 08:04:12,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 08:04:12,170 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 7 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 6 states have call predecessors, (24), 7 states have call successors, (24) Word has length 70 [2023-11-19 08:04:12,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:12,171 INFO L225 Difference]: With dead ends: 114 [2023-11-19 08:04:12,171 INFO L226 Difference]: Without dead ends: 100 [2023-11-19 08:04:12,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-11-19 08:04:12,173 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:12,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 139 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:04:12,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-19 08:04:12,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-11-19 08:04:12,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 57 states have (on average 1.0175438596491229) internal successors, (58), 57 states have internal predecessors, (58), 28 states have call successors, (28), 15 states have call predecessors, (28), 14 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2023-11-19 08:04:12,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2023-11-19 08:04:12,254 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 70 [2023-11-19 08:04:12,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:12,254 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2023-11-19 08:04:12,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 7 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (24), 6 states have call predecessors, (24), 7 states have call successors, (24) [2023-11-19 08:04:12,255 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2023-11-19 08:04:12,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-19 08:04:12,257 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:04:12,258 INFO L195 NwaCegarLoop]: trace histogram [28, 27, 27, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:12,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:12,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 08:04:12,477 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:04:12,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:04:12,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1019061416, now seen corresponding path program 2 times [2023-11-19 08:04:12,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:04:12,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911398457] [2023-11-19 08:04:12,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:04:12,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:04:12,493 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:04:12,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1022952130] [2023-11-19 08:04:12,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:04:12,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:04:12,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:04:12,495 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:04:12,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 08:04:12,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 08:04:12,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:04:12,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-19 08:04:12,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:04:13,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 113 proven. 89 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2023-11-19 08:04:13,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:04:14,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1528 backedges. 113 proven. 47 refuted. 0 times theorem prover too weak. 1368 trivial. 0 not checked. [2023-11-19 08:04:14,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:04:14,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911398457] [2023-11-19 08:04:14,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:04:14,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022952130] [2023-11-19 08:04:14,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022952130] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:04:14,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:04:14,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 19 [2023-11-19 08:04:14,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058507316] [2023-11-19 08:04:14,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:04:14,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-19 08:04:14,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:04:14,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 08:04:14,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-11-19 08:04:14,266 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand has 19 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 11 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (39), 9 states have call predecessors, (39), 11 states have call successors, (39) [2023-11-19 08:04:15,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:04:15,346 INFO L93 Difference]: Finished difference Result 128 states and 146 transitions. [2023-11-19 08:04:15,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 08:04:15,346 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 11 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (39), 9 states have call predecessors, (39), 11 states have call successors, (39) Word has length 151 [2023-11-19 08:04:15,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:04:15,348 INFO L225 Difference]: With dead ends: 128 [2023-11-19 08:04:15,348 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 08:04:15,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 280 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2023-11-19 08:04:15,350 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 18 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:04:15,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 242 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:04:15,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 08:04:15,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 08:04:15,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:04:15,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 08:04:15,352 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 151 [2023-11-19 08:04:15,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:04:15,353 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 08:04:15,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 1.9375) internal successors, (31), 16 states have internal predecessors, (31), 11 states have call successors, (41), 3 states have call predecessors, (41), 2 states have return successors, (39), 9 states have call predecessors, (39), 11 states have call successors, (39) [2023-11-19 08:04:15,353 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 08:04:15,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 08:04:15,356 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 08:04:15,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 08:04:15,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 08:04:15,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 08:04:23,934 INFO L895 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: (and (or (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) (< |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1))) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (= (* 2 |ULTIMATE.start_main_~y~0#1|) (+ (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 2))) [2023-11-19 08:04:23,934 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 08:04:23,934 INFO L895 garLoopResultBuilder]: At program point L33-1(line 33) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|)) (.cse2 (* |ULTIMATE.start_main_~x~0#1| 18)) (.cse1 (* 2 |ULTIMATE.start_main_~z~0#1|))) (and (= (+ .cse0 .cse1) (+ 6 (* |ULTIMATE.start_main_~y~0#1| 12) .cse2)) (= (+ .cse0 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) .cse2 (* |ULTIMATE.start_main_~y~0#1| 24))) (or (< |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse1))) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) [2023-11-19 08:04:23,934 INFO L899 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2023-11-19 08:04:23,934 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (and (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) [2023-11-19 08:04:23,935 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse1 (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| (+ .cse0 .cse1 1)) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|))) (= (+ .cse0 .cse1 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) [2023-11-19 08:04:23,935 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 08:04:23,935 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 22 55) no Hoare annotation was computed. [2023-11-19 08:04:23,935 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (* 2 |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (or (< |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (= (+ .cse0 (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|)))) (= .cse0 (+ (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 2)) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) [2023-11-19 08:04:23,935 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (let ((.cse0 (* 2 |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (or (< |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (= (+ .cse0 (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|)))) (= .cse0 (+ (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 2)) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) [2023-11-19 08:04:23,935 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-19 08:04:23,936 INFO L895 garLoopResultBuilder]: At program point L32-2(lines 32 45) the Hoare annotation is: (and (or (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) (< |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1))) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (= (* 2 |ULTIMATE.start_main_~y~0#1|) (+ (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 2))) [2023-11-19 08:04:23,936 INFO L895 garLoopResultBuilder]: At program point L32-3(lines 32 45) the Hoare annotation is: (let ((.cse0 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse1 (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| (+ .cse0 .cse1 1)) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (= (+ .cse0 .cse1 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) [2023-11-19 08:04:23,936 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-19 08:04:23,936 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (and (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) [2023-11-19 08:04:23,936 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse0 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse1 (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| (+ .cse0 .cse1 1)) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (= (+ .cse0 .cse1 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) [2023-11-19 08:04:23,939 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse0 (* 3 |ULTIMATE.start_main_~n~0#1|)) (.cse1 (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (and (= |ULTIMATE.start_main_~y~0#1| (+ .cse0 .cse1 1)) (= (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| 12) (* 6 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (= (+ .cse0 .cse1 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) [2023-11-19 08:04:23,939 INFO L899 garLoopResultBuilder]: For program point L37(lines 32 45) no Hoare annotation was computed. [2023-11-19 08:04:23,939 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (* 2 |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (or (< |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (= (+ .cse0 (* 6 |ULTIMATE.start_main_~a~0#1|) 10) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) (* 2 |ULTIMATE.start_main_~z~0#1|)))) (= .cse0 (+ (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~z~0#1|) 2)) (= (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) 1) (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) [2023-11-19 08:04:23,939 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-11-19 08:04:23,940 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-11-19 08:04:23,940 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-11-19 08:04:23,940 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-11-19 08:04:23,940 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-11-19 08:04:23,940 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-11-19 08:04:23,949 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1] [2023-11-19 08:04:23,951 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:04:23,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:04:23 BoogieIcfgContainer [2023-11-19 08:04:23,981 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:04:23,982 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:04:23,982 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:04:23,982 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:04:23,983 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:01" (3/4) ... [2023-11-19 08:04:23,986 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 08:04:23,990 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-19 08:04:23,996 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-19 08:04:23,997 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 08:04:23,997 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 08:04:23,997 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 08:04:24,108 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 08:04:24,109 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 08:04:24,109 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:04:24,110 INFO L158 Benchmark]: Toolchain (without parser) took 23213.72ms. Allocated memory was 127.9MB in the beginning and 220.2MB in the end (delta: 92.3MB). Free memory was 81.9MB in the beginning and 122.8MB in the end (delta: -40.9MB). Peak memory consumption was 54.0MB. Max. memory is 16.1GB. [2023-11-19 08:04:24,110 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 127.9MB. Free memory is still 100.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:04:24,110 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.59ms. Allocated memory is still 127.9MB. Free memory was 81.9MB in the beginning and 71.2MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 08:04:24,111 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.44ms. Allocated memory is still 127.9MB. Free memory was 70.9MB in the beginning and 69.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:04:24,112 INFO L158 Benchmark]: Boogie Preprocessor took 42.58ms. Allocated memory is still 127.9MB. Free memory was 69.5MB in the beginning and 68.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:04:24,113 INFO L158 Benchmark]: RCFGBuilder took 342.30ms. Allocated memory is still 127.9MB. Free memory was 68.4MB in the beginning and 57.0MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 08:04:24,113 INFO L158 Benchmark]: TraceAbstraction took 22290.50ms. Allocated memory was 127.9MB in the beginning and 220.2MB in the end (delta: 92.3MB). Free memory was 56.5MB in the beginning and 127.0MB in the end (delta: -70.5MB). Peak memory consumption was 90.1MB. Max. memory is 16.1GB. [2023-11-19 08:04:24,114 INFO L158 Benchmark]: Witness Printer took 127.27ms. Allocated memory is still 220.2MB. Free memory was 127.0MB in the beginning and 122.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 08:04:24,116 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 127.9MB. Free memory is still 100.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 340.59ms. Allocated memory is still 127.9MB. Free memory was 81.9MB in the beginning and 71.2MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.44ms. Allocated memory is still 127.9MB. Free memory was 70.9MB in the beginning and 69.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.58ms. Allocated memory is still 127.9MB. Free memory was 69.5MB in the beginning and 68.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 342.30ms. Allocated memory is still 127.9MB. Free memory was 68.4MB in the beginning and 57.0MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 22290.50ms. Allocated memory was 127.9MB in the beginning and 220.2MB in the end (delta: 92.3MB). Free memory was 56.5MB in the beginning and 127.0MB in the end (delta: -70.5MB). Peak memory consumption was 90.1MB. Max. memory is 16.1GB. * Witness Printer took 127.27ms. Allocated memory is still 220.2MB. Free memory was 127.0MB in the beginning and 122.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.2s, OverallIterations: 11, TraceHistogramMax: 28, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 182 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 134 mSDsluCounter, 1320 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1030 mSDsCounter, 261 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1312 IncrementalHoareTripleChecker+Invalid, 1574 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 261 mSolverCounterUnsat, 290 mSDtfsCounter, 1312 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 914 GetRequests, 793 SyntacticMatches, 3 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=10, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 70 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 78 PreInvPairs, 140 NumberOfFragments, 630 HoareAnnotationTreeSize, 78 FomulaSimplifications, 27620 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 13 FomulaSimplificationsInter, 5508 FormulaSimplificationTreeSizeReductionInter, 7.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 483 NumberOfCodeBlocks, 453 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 884 ConstructedInterpolants, 0 QuantifiedInterpolants, 4296 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1101 ConjunctsInSsa, 194 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 4408/4792 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((((x * z) == ((x * 12) + (6 * (a * x)))) || (n < (a + 1))) && ((((y * z) + 6) + (z * z)) == (((z * 4) + (x * 18)) + (y * 24)))) && (z == (6 + (6 * n)))) && ((2 * y) == ((n * z) + 2))) RESULT: Ultimate proved your program to be correct! [2023-11-19 08:04:24,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79ae6858-5cc6-40ef-b701-3fac57a13459/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE