./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 34f640e37bae156029b1a359a4abe58394472212f3f36aea9107706542ec544a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:51:55,387 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:51:55,472 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-28 23:51:55,478 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:51:55,479 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:51:55,505 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:51:55,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:51:55,507 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:51:55,507 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:51:55,508 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:51:55,508 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:51:55,509 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:51:55,510 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:51:55,510 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:51:55,511 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:51:55,511 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:51:55,511 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:51:55,512 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:51:55,512 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:51:55,513 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:51:55,513 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:51:55,514 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:51:55,514 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:51:55,515 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:51:55,515 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 23:51:55,515 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 23:51:55,516 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:51:55,516 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:51:55,517 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:51:55,517 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:51:55,518 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:51:55,518 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:51:55,518 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:51:55,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:51:55,519 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:51:55,519 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:51:55,519 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:51:55,519 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:51:55,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:51:55,520 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:51:55,520 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:51:55,520 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:51:55,521 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:51:55,521 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:51:55,521 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_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34f640e37bae156029b1a359a4abe58394472212f3f36aea9107706542ec544a [2023-11-28 23:51:55,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:51:55,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:51:55,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:51:55,800 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:51:55,801 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:51:55,802 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c [2023-11-28 23:51:58,527 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:51:58,701 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:51:58,701 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c [2023-11-28 23:51:58,708 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/data/bb895df6a/e6d91e7ded6f47be96f64b5f7f8f74f1/FLAGa672c4ed8 [2023-11-28 23:51:58,721 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/data/bb895df6a/e6d91e7ded6f47be96f64b5f7f8f74f1 [2023-11-28 23:51:58,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:51:58,724 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:51:58,726 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:51:58,726 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:51:58,731 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:51:58,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,732 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ac91979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58, skipping insertion in model container [2023-11-28 23:51:58,733 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,749 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:51:58,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:51:58,892 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:51:58,908 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:51:58,922 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:51:58,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58 WrapperNode [2023-11-28 23:51:58,922 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:51:58,923 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:51:58,923 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:51:58,923 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:51:58,929 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,934 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,951 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2023-11-28 23:51:58,951 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:51:58,952 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:51:58,952 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:51:58,952 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:51:58,961 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,963 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,972 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-28 23:51:58,972 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,972 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,975 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,978 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,979 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,979 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,982 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:51:58,982 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:51:58,982 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:51:58,983 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:51:58,983 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (1/1) ... [2023-11-28 23:51:58,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:51:59,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:51:59,012 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:51:59,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:51:59,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:51:59,055 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-28 23:51:59,055 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-28 23:51:59,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:51:59,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:51:59,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:51:59,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-28 23:51:59,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-28 23:51:59,127 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:51:59,129 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:51:59,335 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:51:59,365 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:51:59,365 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-28 23:51:59,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:51:59 BoogieIcfgContainer [2023-11-28 23:51:59,366 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:51:59,369 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:51:59,369 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:51:59,386 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:51:59,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:51:58" (1/3) ... [2023-11-28 23:51:59,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae92f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:51:59, skipping insertion in model container [2023-11-28 23:51:59,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:58" (2/3) ... [2023-11-28 23:51:59,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae92f76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:51:59, skipping insertion in model container [2023-11-28 23:51:59,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:51:59" (3/3) ... [2023-11-28 23:51:59,390 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound5.c [2023-11-28 23:51:59,410 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:51:59,410 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-28 23:51:59,478 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:51:59,486 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;@17239682, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:51:59,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-28 23:51:59,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 45 states have internal predecessors, (51), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-28 23:51:59,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-28 23:51:59,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:51:59,501 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:59,501 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:51:59,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:59,507 INFO L85 PathProgramCache]: Analyzing trace with hash -783542553, now seen corresponding path program 1 times [2023-11-28 23:51:59,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:59,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063790073] [2023-11-28 23:51:59,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:59,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:59,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:59,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063790073] [2023-11-28 23:51:59,643 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-28 23:51:59,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779686110] [2023-11-28 23:51:59,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:59,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:51:59,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:51:59,646 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:51:59,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:51:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:59,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-28 23:51:59,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:51:59,743 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-28 23:51:59,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:51:59,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779686110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:59,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:51:59,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 23:51:59,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212931366] [2023-11-28 23:51:59,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:59,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-28 23:51:59,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:59,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-28 23:51:59,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 23:51:59,779 INFO L87 Difference]: Start difference. First operand has 53 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 45 states have internal predecessors, (51), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-28 23:51:59,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:51:59,803 INFO L93 Difference]: Finished difference Result 104 states and 124 transitions. [2023-11-28 23:51:59,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-28 23:51:59,806 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2023-11-28 23:51:59,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:51:59,814 INFO L225 Difference]: With dead ends: 104 [2023-11-28 23:51:59,814 INFO L226 Difference]: Without dead ends: 50 [2023-11-28 23:51:59,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-28 23:51:59,821 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:51:59,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:51:59,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-28 23:51:59,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-28 23:51:59,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 43 states have internal predecessors, (45), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-28 23:51:59,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2023-11-28 23:51:59,862 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 20 [2023-11-28 23:51:59,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:51:59,862 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2023-11-28 23:51:59,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-28 23:51:59,863 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2023-11-28 23:51:59,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-28 23:51:59,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:51:59,864 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:59,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 23:52:00,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-28 23:52:00,071 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:52:00,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:00,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1613567575, now seen corresponding path program 1 times [2023-11-28 23:52:00,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:00,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033313889] [2023-11-28 23:52:00,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:00,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:00,129 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:00,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773414234] [2023-11-28 23:52:00,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:00,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:00,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:00,135 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:00,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:52:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:00,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-28 23:52:00,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-28 23:52:00,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:00,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:00,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033313889] [2023-11-28 23:52:00,599 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:00,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773414234] [2023-11-28 23:52:00,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773414234] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:52:00,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:52:00,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-28 23:52:00,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940723644] [2023-11-28 23:52:00,601 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:00,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:52:00,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:00,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:52:00,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:52:00,604 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-28 23:52:00,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:52:00,846 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2023-11-28 23:52:00,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:52:00,847 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2023-11-28 23:52:00,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:52:00,848 INFO L225 Difference]: With dead ends: 84 [2023-11-28 23:52:00,848 INFO L226 Difference]: Without dead ends: 75 [2023-11-28 23:52:00,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:52:00,850 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 87 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:52:00,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 71 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:52:00,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-28 23:52:00,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 64. [2023-11-28 23:52:00,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.5348837209302326) internal successors, (66), 56 states have internal predecessors, (66), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-28 23:52:00,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 76 transitions. [2023-11-28 23:52:00,864 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 76 transitions. Word has length 20 [2023-11-28 23:52:00,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:52:00,865 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 76 transitions. [2023-11-28 23:52:00,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-28 23:52:00,866 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 76 transitions. [2023-11-28 23:52:00,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-28 23:52:00,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:52:00,867 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:00,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:52:01,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:01,071 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:52:01,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:01,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1519012777, now seen corresponding path program 1 times [2023-11-28 23:52:01,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:01,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54243554] [2023-11-28 23:52:01,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:01,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:01,086 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:01,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219365417] [2023-11-28 23:52:01,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:01,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:01,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:01,088 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:01,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:52:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:01,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-28 23:52:01,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:01,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 23:52:01,264 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:52:01,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:01,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54243554] [2023-11-28 23:52:01,265 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:01,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219365417] [2023-11-28 23:52:01,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219365417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:01,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:01,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-28 23:52:01,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782727584] [2023-11-28 23:52:01,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:01,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:52:01,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:01,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:52:01,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:52:01,267 INFO L87 Difference]: Start difference. First operand 64 states and 76 transitions. Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-28 23:52:01,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:52:01,439 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2023-11-28 23:52:01,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 23:52:01,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 21 [2023-11-28 23:52:01,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:52:01,441 INFO L225 Difference]: With dead ends: 72 [2023-11-28 23:52:01,442 INFO L226 Difference]: Without dead ends: 65 [2023-11-28 23:52:01,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:52:01,444 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 124 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:52:01,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 89 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:52:01,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-28 23:52:01,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2023-11-28 23:52:01,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 53 states have internal predecessors, (60), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-28 23:52:01,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2023-11-28 23:52:01,455 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 21 [2023-11-28 23:52:01,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:52:01,455 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2023-11-28 23:52:01,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-28 23:52:01,456 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2023-11-28 23:52:01,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-28 23:52:01,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:52:01,457 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:01,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-28 23:52:01,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:01,658 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:52:01,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:01,658 INFO L85 PathProgramCache]: Analyzing trace with hash -155244117, now seen corresponding path program 1 times [2023-11-28 23:52:01,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:01,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836153309] [2023-11-28 23:52:01,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:01,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:01,670 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:01,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559555182] [2023-11-28 23:52:01,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:01,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:01,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:01,672 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:01,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:52:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:01,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:52:01,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 23:52:01,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:52:01,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:01,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836153309] [2023-11-28 23:52:01,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:01,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559555182] [2023-11-28 23:52:01,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559555182] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:01,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:01,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:52:01,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092640702] [2023-11-28 23:52:01,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:01,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:52:01,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:01,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:52:01,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:52:01,737 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-28 23:52:01,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:52:01,821 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2023-11-28 23:52:01,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:52:01,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2023-11-28 23:52:01,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:52:01,823 INFO L225 Difference]: With dead ends: 87 [2023-11-28 23:52:01,823 INFO L226 Difference]: Without dead ends: 86 [2023-11-28 23:52:01,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:52:01,824 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 21 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:52:01,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 88 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:52:01,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-28 23:52:01,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 75. [2023-11-28 23:52:01,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.4545454545454546) internal successors, (80), 66 states have internal predecessors, (80), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-28 23:52:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 92 transitions. [2023-11-28 23:52:01,837 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 92 transitions. Word has length 22 [2023-11-28 23:52:01,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:52:01,838 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 92 transitions. [2023-11-28 23:52:01,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-28 23:52:01,838 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 92 transitions. [2023-11-28 23:52:01,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-28 23:52:01,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:52:01,839 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:01,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-28 23:52:02,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:02,040 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:52:02,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:02,040 INFO L85 PathProgramCache]: Analyzing trace with hash -517600277, now seen corresponding path program 1 times [2023-11-28 23:52:02,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:02,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828949331] [2023-11-28 23:52:02,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:02,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:02,054 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:02,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662164226] [2023-11-28 23:52:02,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:02,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:02,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:02,056 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:02,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:52:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:02,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:52:02,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:02,120 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 23:52:02,121 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:52:02,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:02,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828949331] [2023-11-28 23:52:02,121 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:02,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662164226] [2023-11-28 23:52:02,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662164226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:02,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:02,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:52:02,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840980457] [2023-11-28 23:52:02,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:02,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:52:02,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:02,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:52:02,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:52:02,123 INFO L87 Difference]: Start difference. First operand 75 states and 92 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-28 23:52:02,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:52:02,185 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2023-11-28 23:52:02,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:52:02,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2023-11-28 23:52:02,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:52:02,187 INFO L225 Difference]: With dead ends: 86 [2023-11-28 23:52:02,187 INFO L226 Difference]: Without dead ends: 85 [2023-11-28 23:52:02,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:52:02,188 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 18 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:52:02,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 91 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:52:02,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-28 23:52:02,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 75. [2023-11-28 23:52:02,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 66 states have internal predecessors, (78), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-28 23:52:02,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2023-11-28 23:52:02,198 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 23 [2023-11-28 23:52:02,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:52:02,199 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2023-11-28 23:52:02,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-28 23:52:02,199 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2023-11-28 23:52:02,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-28 23:52:02,200 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:52:02,200 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:02,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 23:52:02,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:02,400 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:52:02,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:02,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1420767521, now seen corresponding path program 1 times [2023-11-28 23:52:02,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:02,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488844575] [2023-11-28 23:52:02,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:02,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:02,414 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:02,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738035051] [2023-11-28 23:52:02,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:02,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:02,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:02,415 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:02,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 23:52:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:02,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:52:02,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:02,527 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 23:52:02,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:52:02,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:02,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488844575] [2023-11-28 23:52:02,527 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:02,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738035051] [2023-11-28 23:52:02,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738035051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:02,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:02,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:52:02,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462481868] [2023-11-28 23:52:02,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:02,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:52:02,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:02,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:52:02,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:52:02,530 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-28 23:52:02,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:52:02,586 INFO L93 Difference]: Finished difference Result 77 states and 90 transitions. [2023-11-28 23:52:02,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:52:02,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2023-11-28 23:52:02,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:52:02,588 INFO L225 Difference]: With dead ends: 77 [2023-11-28 23:52:02,588 INFO L226 Difference]: Without dead ends: 76 [2023-11-28 23:52:02,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:52:02,589 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 50 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:52:02,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 71 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:52:02,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-28 23:52:02,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2023-11-28 23:52:02,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.4) internal successors, (77), 66 states have internal predecessors, (77), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-28 23:52:02,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2023-11-28 23:52:02,603 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 33 [2023-11-28 23:52:02,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:52:02,603 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2023-11-28 23:52:02,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-28 23:52:02,604 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2023-11-28 23:52:02,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-28 23:52:02,605 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:52:02,606 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:02,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 23:52:02,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-28 23:52:02,806 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:52:02,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:02,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1094120262, now seen corresponding path program 1 times [2023-11-28 23:52:02,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:02,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175535182] [2023-11-28 23:52:02,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:02,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:02,828 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:02,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1295146999] [2023-11-28 23:52:02,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:02,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:02,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:02,829 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:02,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 23:52:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:02,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:52:02,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 23:52:02,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:52:02,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:02,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175535182] [2023-11-28 23:52:02,948 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:02,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295146999] [2023-11-28 23:52:02,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295146999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:02,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:02,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:52:02,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505291886] [2023-11-28 23:52:02,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:02,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:52:02,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:02,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:52:02,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:52:02,950 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-28 23:52:03,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:52:03,003 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2023-11-28 23:52:03,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:52:03,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2023-11-28 23:52:03,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:52:03,005 INFO L225 Difference]: With dead ends: 76 [2023-11-28 23:52:03,005 INFO L226 Difference]: Without dead ends: 75 [2023-11-28 23:52:03,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:52:03,006 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 47 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:52:03,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 72 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:52:03,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-28 23:52:03,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-11-28 23:52:03,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 66 states have internal predecessors, (76), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-28 23:52:03,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2023-11-28 23:52:03,019 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 34 [2023-11-28 23:52:03,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:52:03,020 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2023-11-28 23:52:03,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-28 23:52:03,020 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2023-11-28 23:52:03,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-28 23:52:03,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:52:03,021 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:03,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-28 23:52:03,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-28 23:52:03,222 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:52:03,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:03,223 INFO L85 PathProgramCache]: Analyzing trace with hash -807839566, now seen corresponding path program 1 times [2023-11-28 23:52:03,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:03,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892112425] [2023-11-28 23:52:03,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:03,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:03,235 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:03,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [353632759] [2023-11-28 23:52:03,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:03,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:03,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:03,237 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:03,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 23:52:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:03,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:52:03,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 23:52:03,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:52:03,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:03,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892112425] [2023-11-28 23:52:03,322 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:03,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353632759] [2023-11-28 23:52:03,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353632759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:03,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:03,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:52:03,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250702489] [2023-11-28 23:52:03,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:03,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:52:03,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:03,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:52:03,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:52:03,325 INFO L87 Difference]: Start difference. First operand 75 states and 88 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-28 23:52:03,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:52:03,371 INFO L93 Difference]: Finished difference Result 75 states and 88 transitions. [2023-11-28 23:52:03,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:52:03,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 36 [2023-11-28 23:52:03,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:52:03,373 INFO L225 Difference]: With dead ends: 75 [2023-11-28 23:52:03,373 INFO L226 Difference]: Without dead ends: 73 [2023-11-28 23:52:03,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:52:03,375 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 43 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:52:03,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 49 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:52:03,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-28 23:52:03,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2023-11-28 23:52:03,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 63 states have internal predecessors, (72), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-28 23:52:03,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2023-11-28 23:52:03,387 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 36 [2023-11-28 23:52:03,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:52:03,387 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2023-11-28 23:52:03,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-28 23:52:03,387 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2023-11-28 23:52:03,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-28 23:52:03,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:52:03,389 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:03,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-28 23:52:03,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:03,594 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:52:03,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:03,595 INFO L85 PathProgramCache]: Analyzing trace with hash 429988456, now seen corresponding path program 1 times [2023-11-28 23:52:03,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:03,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219514917] [2023-11-28 23:52:03,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:03,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:03,605 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:03,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868330594] [2023-11-28 23:52:03,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:03,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:03,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:03,607 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:03,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 23:52:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:03,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:52:03,652 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 23:52:03,694 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:52:03,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:03,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219514917] [2023-11-28 23:52:03,695 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:03,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868330594] [2023-11-28 23:52:03,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868330594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:03,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:03,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:52:03,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479940740] [2023-11-28 23:52:03,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:03,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:52:03,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:03,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:52:03,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:52:03,697 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-28 23:52:03,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:52:03,746 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2023-11-28 23:52:03,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:52:03,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37 [2023-11-28 23:52:03,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:52:03,748 INFO L225 Difference]: With dead ends: 76 [2023-11-28 23:52:03,748 INFO L226 Difference]: Without dead ends: 75 [2023-11-28 23:52:03,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:52:03,749 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 49 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:52:03,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 67 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:52:03,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-28 23:52:03,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2023-11-28 23:52:03,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 65 states have internal predecessors, (74), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-28 23:52:03,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 86 transitions. [2023-11-28 23:52:03,759 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 86 transitions. Word has length 37 [2023-11-28 23:52:03,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:52:03,759 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 86 transitions. [2023-11-28 23:52:03,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-28 23:52:03,759 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 86 transitions. [2023-11-28 23:52:03,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-28 23:52:03,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:52:03,761 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:03,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-28 23:52:03,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:03,967 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:52:03,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:03,967 INFO L85 PathProgramCache]: Analyzing trace with hash 444740330, now seen corresponding path program 1 times [2023-11-28 23:52:03,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:03,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944728073] [2023-11-28 23:52:03,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:03,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:03,977 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:03,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2116856451] [2023-11-28 23:52:03,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:03,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:03,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:03,979 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:03,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-28 23:52:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:04,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 23:52:04,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:04,062 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 23:52:04,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:52:04,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:04,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944728073] [2023-11-28 23:52:04,063 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:04,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116856451] [2023-11-28 23:52:04,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116856451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:04,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:04,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:52:04,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167053121] [2023-11-28 23:52:04,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:04,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:52:04,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:04,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:52:04,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:52:04,066 INFO L87 Difference]: Start difference. First operand 74 states and 86 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-28 23:52:04,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:52:04,115 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2023-11-28 23:52:04,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:52:04,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2023-11-28 23:52:04,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:52:04,117 INFO L225 Difference]: With dead ends: 76 [2023-11-28 23:52:04,117 INFO L226 Difference]: Without dead ends: 75 [2023-11-28 23:52:04,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:52:04,118 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 46 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:52:04,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 68 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:52:04,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-28 23:52:04,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2023-11-28 23:52:04,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 66 states have internal predecessors, (75), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-28 23:52:04,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2023-11-28 23:52:04,128 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 38 [2023-11-28 23:52:04,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:52:04,129 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2023-11-28 23:52:04,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-28 23:52:04,129 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2023-11-28 23:52:04,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-28 23:52:04,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:52:04,130 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:04,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-28 23:52:04,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-28 23:52:04,334 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:52:04,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:04,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1055259124, now seen corresponding path program 1 times [2023-11-28 23:52:04,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:04,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192431672] [2023-11-28 23:52:04,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:04,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:04,345 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:04,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1519184939] [2023-11-28 23:52:04,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:04,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:04,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:04,347 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:04,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-28 23:52:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:04,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-28 23:52:04,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:04,602 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-28 23:52:04,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:07,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:07,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192431672] [2023-11-28 23:52:07,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:07,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519184939] [2023-11-28 23:52:07,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519184939] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:52:07,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:52:07,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-28 23:52:07,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402460292] [2023-11-28 23:52:07,399 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:07,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:52:07,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:07,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:52:07,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=98, Unknown=1, NotChecked=0, Total=132 [2023-11-28 23:52:07,400 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-28 23:52:07,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:52:07,673 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2023-11-28 23:52:07,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-28 23:52:07,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2023-11-28 23:52:07,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:52:07,674 INFO L225 Difference]: With dead ends: 87 [2023-11-28 23:52:07,675 INFO L226 Difference]: Without dead ends: 83 [2023-11-28 23:52:07,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=57, Invalid=152, Unknown=1, NotChecked=0, Total=210 [2023-11-28 23:52:07,676 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 107 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:52:07,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 75 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:52:07,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-28 23:52:07,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 77. [2023-11-28 23:52:07,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 68 states have internal predecessors, (76), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-28 23:52:07,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2023-11-28 23:52:07,683 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 38 [2023-11-28 23:52:07,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:52:07,683 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2023-11-28 23:52:07,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-28 23:52:07,683 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2023-11-28 23:52:07,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-28 23:52:07,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:52:07,684 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:07,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-28 23:52:07,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:07,895 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:52:07,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:07,895 INFO L85 PathProgramCache]: Analyzing trace with hash 902048426, now seen corresponding path program 1 times [2023-11-28 23:52:07,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:07,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080493172] [2023-11-28 23:52:07,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:07,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:07,904 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:07,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2028624062] [2023-11-28 23:52:07,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:07,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:07,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:07,905 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:07,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-28 23:52:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:07,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:52:07,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:07,991 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 23:52:07,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:52:07,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:07,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080493172] [2023-11-28 23:52:07,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:07,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028624062] [2023-11-28 23:52:07,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028624062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:07,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:07,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:52:07,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931622271] [2023-11-28 23:52:07,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:07,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:52:07,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:07,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:52:07,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:52:07,993 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 23:52:08,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:52:08,190 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2023-11-28 23:52:08,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:52:08,191 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 39 [2023-11-28 23:52:08,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:52:08,192 INFO L225 Difference]: With dead ends: 85 [2023-11-28 23:52:08,192 INFO L226 Difference]: Without dead ends: 83 [2023-11-28 23:52:08,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:52:08,193 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 30 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:52:08,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 95 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:52:08,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-28 23:52:08,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 72. [2023-11-28 23:52:08,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 63 states have internal predecessors, (69), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-28 23:52:08,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2023-11-28 23:52:08,200 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 39 [2023-11-28 23:52:08,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:52:08,200 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2023-11-28 23:52:08,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 23:52:08,200 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2023-11-28 23:52:08,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-28 23:52:08,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:52:08,201 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:08,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-28 23:52:08,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:08,407 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:52:08,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:08,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1646705474, now seen corresponding path program 1 times [2023-11-28 23:52:08,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:08,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774207187] [2023-11-28 23:52:08,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:08,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:08,415 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:08,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1042949989] [2023-11-28 23:52:08,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:08,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:08,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:08,417 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:08,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-28 23:52:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:08,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-28 23:52:08,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-28 23:52:08,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:10,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:10,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774207187] [2023-11-28 23:52:10,272 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:10,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042949989] [2023-11-28 23:52:10,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042949989] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:52:10,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:52:10,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-28 23:52:10,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503953273] [2023-11-28 23:52:10,272 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:10,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-28 23:52:10,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:10,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-28 23:52:10,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:52:10,274 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-28 23:52:10,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:52:10,698 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2023-11-28 23:52:10,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:52:10,698 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 39 [2023-11-28 23:52:10,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:52:10,699 INFO L225 Difference]: With dead ends: 94 [2023-11-28 23:52:10,699 INFO L226 Difference]: Without dead ends: 92 [2023-11-28 23:52:10,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2023-11-28 23:52:10,700 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 82 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:52:10,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 110 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 23:52:10,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-28 23:52:10,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 86. [2023-11-28 23:52:10,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 76 states have internal predecessors, (83), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-28 23:52:10,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2023-11-28 23:52:10,708 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 39 [2023-11-28 23:52:10,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:52:10,709 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2023-11-28 23:52:10,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-28 23:52:10,709 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2023-11-28 23:52:10,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-28 23:52:10,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:52:10,710 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:10,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-28 23:52:10,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-28 23:52:10,911 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:52:10,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:10,911 INFO L85 PathProgramCache]: Analyzing trace with hash -685627986, now seen corresponding path program 1 times [2023-11-28 23:52:10,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:10,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134003992] [2023-11-28 23:52:10,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:10,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:10,920 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:10,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166567247] [2023-11-28 23:52:10,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:10,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:10,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:10,921 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:10,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-28 23:52:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:10,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-28 23:52:10,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-28 23:52:11,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:16,637 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-28 23:52:16,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:16,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134003992] [2023-11-28 23:52:16,637 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:16,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166567247] [2023-11-28 23:52:16,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166567247] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:52:16,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:52:16,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-11-28 23:52:16,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015618627] [2023-11-28 23:52:16,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:16,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-28 23:52:16,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:16,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-28 23:52:16,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=182, Unknown=1, NotChecked=0, Total=240 [2023-11-28 23:52:16,640 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand has 16 states, 15 states have (on average 3.6) internal successors, (54), 16 states have internal predecessors, (54), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-28 23:52:19,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:52:19,475 INFO L93 Difference]: Finished difference Result 104 states and 117 transitions. [2023-11-28 23:52:19,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:52:19,476 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 16 states have internal predecessors, (54), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 42 [2023-11-28 23:52:19,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:52:19,477 INFO L225 Difference]: With dead ends: 104 [2023-11-28 23:52:19,477 INFO L226 Difference]: Without dead ends: 102 [2023-11-28 23:52:19,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=177, Invalid=472, Unknown=1, NotChecked=0, Total=650 [2023-11-28 23:52:19,478 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 108 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 18 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:52:19,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 156 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 389 Invalid, 2 Unknown, 0 Unchecked, 2.5s Time] [2023-11-28 23:52:19,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-28 23:52:19,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 84. [2023-11-28 23:52:19,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 69 states have (on average 1.173913043478261) internal successors, (81), 74 states have internal predecessors, (81), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-28 23:52:19,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2023-11-28 23:52:19,485 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 42 [2023-11-28 23:52:19,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:52:19,485 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2023-11-28 23:52:19,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 16 states have internal predecessors, (54), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-28 23:52:19,485 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2023-11-28 23:52:19,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-28 23:52:19,486 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:52:19,486 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:19,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-28 23:52:19,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-28 23:52:19,686 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:52:19,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:19,687 INFO L85 PathProgramCache]: Analyzing trace with hash 220368964, now seen corresponding path program 1 times [2023-11-28 23:52:19,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:19,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464108792] [2023-11-28 23:52:19,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:19,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:19,696 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:19,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386795761] [2023-11-28 23:52:19,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:19,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:19,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:19,697 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:19,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-28 23:52:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:19,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-28 23:52:19,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:19,982 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-28 23:52:19,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:21,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:21,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464108792] [2023-11-28 23:52:21,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:21,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386795761] [2023-11-28 23:52:21,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386795761] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:52:21,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:52:21,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-28 23:52:21,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112613108] [2023-11-28 23:52:21,855 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:21,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:52:21,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:21,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:52:21,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-28 23:52:21,856 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-28 23:52:22,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:52:22,302 INFO L93 Difference]: Finished difference Result 108 states and 121 transitions. [2023-11-28 23:52:22,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:52:22,302 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 43 [2023-11-28 23:52:22,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:52:22,303 INFO L225 Difference]: With dead ends: 108 [2023-11-28 23:52:22,303 INFO L226 Difference]: Without dead ends: 106 [2023-11-28 23:52:22,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2023-11-28 23:52:22,304 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 151 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:52:22,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 114 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:52:22,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-28 23:52:22,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 98. [2023-11-28 23:52:22,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 82 states have (on average 1.1829268292682926) internal successors, (97), 87 states have internal predecessors, (97), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-28 23:52:22,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2023-11-28 23:52:22,311 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 43 [2023-11-28 23:52:22,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:52:22,311 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2023-11-28 23:52:22,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-28 23:52:22,311 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2023-11-28 23:52:22,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-28 23:52:22,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:52:22,312 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:22,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-28 23:52:22,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:22,513 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:52:22,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:22,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1758496656, now seen corresponding path program 1 times [2023-11-28 23:52:22,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:22,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801017622] [2023-11-28 23:52:22,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:22,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:22,520 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:22,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762754151] [2023-11-28 23:52:22,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:22,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:22,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:22,522 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:22,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-28 23:52:22,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:22,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-28 23:52:22,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:22,643 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-28 23:52:22,643 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:22,743 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-28 23:52:22,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:22,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801017622] [2023-11-28 23:52:22,743 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:22,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762754151] [2023-11-28 23:52:22,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762754151] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:52:22,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:52:22,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-11-28 23:52:22,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196303205] [2023-11-28 23:52:22,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:22,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:52:22,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:22,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:52:22,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:52:22,745 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-28 23:52:22,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:52:22,870 INFO L93 Difference]: Finished difference Result 101 states and 116 transitions. [2023-11-28 23:52:22,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:52:22,870 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 44 [2023-11-28 23:52:22,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:52:22,872 INFO L225 Difference]: With dead ends: 101 [2023-11-28 23:52:22,872 INFO L226 Difference]: Without dead ends: 99 [2023-11-28 23:52:22,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:52:22,873 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 71 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 23:52:22,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 90 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 23:52:22,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-28 23:52:22,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2023-11-28 23:52:22,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 82 states have (on average 1.146341463414634) internal successors, (94), 85 states have internal predecessors, (94), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-28 23:52:22,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2023-11-28 23:52:22,881 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 44 [2023-11-28 23:52:22,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:52:22,882 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2023-11-28 23:52:22,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 5 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-28 23:52:22,882 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2023-11-28 23:52:22,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-28 23:52:22,882 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:52:22,883 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:22,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-28 23:52:23,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:23,083 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:52:23,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:23,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1321178566, now seen corresponding path program 1 times [2023-11-28 23:52:23,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:23,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652047138] [2023-11-28 23:52:23,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:23,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:23,090 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:23,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974909476] [2023-11-28 23:52:23,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:23,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:23,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:23,091 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:23,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-28 23:52:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:23,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-28 23:52:23,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:23,660 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-28 23:52:23,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:48,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:48,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652047138] [2023-11-28 23:52:48,013 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:48,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974909476] [2023-11-28 23:52:48,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974909476] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:52:48,013 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:52:48,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-28 23:52:48,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469568953] [2023-11-28 23:52:48,014 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:48,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-28 23:52:48,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:48,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-28 23:52:48,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=565, Unknown=2, NotChecked=0, Total=702 [2023-11-28 23:52:48,015 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-28 23:52:48,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:52:48,655 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2023-11-28 23:52:48,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-28 23:52:48,656 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 45 [2023-11-28 23:52:48,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:52:48,656 INFO L225 Difference]: With dead ends: 102 [2023-11-28 23:52:48,656 INFO L226 Difference]: Without dead ends: 100 [2023-11-28 23:52:48,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=276, Invalid=1054, Unknown=2, NotChecked=0, Total=1332 [2023-11-28 23:52:48,658 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 64 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 23:52:48,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 143 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 23:52:48,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-28 23:52:48,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2023-11-28 23:52:48,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 84 states have (on average 1.130952380952381) internal successors, (95), 87 states have internal predecessors, (95), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-28 23:52:48,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2023-11-28 23:52:48,666 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 45 [2023-11-28 23:52:48,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:52:48,666 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2023-11-28 23:52:48,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-28 23:52:48,666 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2023-11-28 23:52:48,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-28 23:52:48,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:52:48,667 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:48,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-28 23:52:48,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-28 23:52:48,868 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:52:48,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:48,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1930025903, now seen corresponding path program 1 times [2023-11-28 23:52:48,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:48,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575126843] [2023-11-28 23:52:48,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:48,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:48,876 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:48,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2111852903] [2023-11-28 23:52:48,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:48,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:48,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:48,877 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:48,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-28 23:52:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:48,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:52:48,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 23:52:48,975 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:52:48,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:48,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575126843] [2023-11-28 23:52:48,976 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:48,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111852903] [2023-11-28 23:52:48,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111852903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:52:48,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:52:48,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:52:48,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346948646] [2023-11-28 23:52:48,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:52:48,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:52:48,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:48,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:52:48,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:52:48,977 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-28 23:52:49,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:52:49,011 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2023-11-28 23:52:49,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:52:49,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 52 [2023-11-28 23:52:49,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:52:49,013 INFO L225 Difference]: With dead ends: 103 [2023-11-28 23:52:49,013 INFO L226 Difference]: Without dead ends: 102 [2023-11-28 23:52:49,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:52:49,014 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 8 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-28 23:52:49,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 80 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-28 23:52:49,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-28 23:52:49,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2023-11-28 23:52:49,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 84 states have (on average 1.130952380952381) internal successors, (95), 87 states have internal predecessors, (95), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-28 23:52:49,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2023-11-28 23:52:49,022 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 52 [2023-11-28 23:52:49,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:52:49,022 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2023-11-28 23:52:49,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-28 23:52:49,022 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2023-11-28 23:52:49,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-28 23:52:49,023 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:52:49,023 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:49,027 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-28 23:52:49,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-28 23:52:49,224 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:52:49,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:49,224 INFO L85 PathProgramCache]: Analyzing trace with hash 568059509, now seen corresponding path program 1 times [2023-11-28 23:52:49,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:49,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37033847] [2023-11-28 23:52:49,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:49,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:49,233 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:49,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1853663145] [2023-11-28 23:52:49,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:49,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:49,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:49,234 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:49,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-28 23:52:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:49,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:52:49,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:49,342 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 23:52:49,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:49,405 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 23:52:49,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:49,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37033847] [2023-11-28 23:52:49,405 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:49,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853663145] [2023-11-28 23:52:49,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853663145] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:52:49,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:52:49,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-28 23:52:49,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976539528] [2023-11-28 23:52:49,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:49,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-28 23:52:49,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:49,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-28 23:52:49,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-28 23:52:49,407 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 6 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-28 23:52:49,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:52:49,609 INFO L93 Difference]: Finished difference Result 179 states and 206 transitions. [2023-11-28 23:52:49,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:52:49,609 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 6 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 56 [2023-11-28 23:52:49,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:52:49,610 INFO L225 Difference]: With dead ends: 179 [2023-11-28 23:52:49,610 INFO L226 Difference]: Without dead ends: 178 [2023-11-28 23:52:49,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:52:49,611 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 221 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:52:49,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 81 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:52:49,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-11-28 23:52:49,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 170. [2023-11-28 23:52:49,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 152 states have (on average 1.1513157894736843) internal successors, (175), 155 states have internal predecessors, (175), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-28 23:52:49,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 199 transitions. [2023-11-28 23:52:49,626 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 199 transitions. Word has length 56 [2023-11-28 23:52:49,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:52:49,626 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 199 transitions. [2023-11-28 23:52:49,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 6 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-28 23:52:49,626 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 199 transitions. [2023-11-28 23:52:49,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-28 23:52:49,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:52:49,627 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:49,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-28 23:52:49,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:49,828 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:52:49,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:49,828 INFO L85 PathProgramCache]: Analyzing trace with hash -2118778221, now seen corresponding path program 2 times [2023-11-28 23:52:49,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:49,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167508651] [2023-11-28 23:52:49,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:49,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:49,834 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:49,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991788435] [2023-11-28 23:52:49,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:52:49,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:49,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:49,835 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:49,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-28 23:52:49,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:52:49,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:52:49,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-28 23:52:49,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-28 23:52:50,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:51,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:51,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167508651] [2023-11-28 23:52:51,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:51,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991788435] [2023-11-28 23:52:51,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991788435] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:52:51,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:52:51,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-28 23:52:51,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547053472] [2023-11-28 23:52:51,399 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:51,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:52:51,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:51,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:52:51,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:52:51,400 INFO L87 Difference]: Start difference. First operand 170 states and 199 transitions. Second operand has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-28 23:52:52,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:52:52,232 INFO L93 Difference]: Finished difference Result 307 states and 357 transitions. [2023-11-28 23:52:52,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 23:52:52,233 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 57 [2023-11-28 23:52:52,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:52:52,234 INFO L225 Difference]: With dead ends: 307 [2023-11-28 23:52:52,234 INFO L226 Difference]: Without dead ends: 243 [2023-11-28 23:52:52,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2023-11-28 23:52:52,236 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 70 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:52:52,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 170 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 23:52:52,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2023-11-28 23:52:52,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 210. [2023-11-28 23:52:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 189 states have (on average 1.1534391534391535) internal successors, (218), 192 states have internal predecessors, (218), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-28 23:52:52,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 248 transitions. [2023-11-28 23:52:52,252 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 248 transitions. Word has length 57 [2023-11-28 23:52:52,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:52:52,253 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 248 transitions. [2023-11-28 23:52:52,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-28 23:52:52,253 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 248 transitions. [2023-11-28 23:52:52,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-28 23:52:52,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:52:52,254 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:52,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-28 23:52:52,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:52,455 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:52:52,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:52,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1567508327, now seen corresponding path program 1 times [2023-11-28 23:52:52,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:52,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172084943] [2023-11-28 23:52:52,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:52,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:52,464 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:52,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2113621992] [2023-11-28 23:52:52,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:52,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:52,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:52,465 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:52,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-28 23:52:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:52,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-28 23:52:52,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:52,871 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-28 23:52:52,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:54,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:54,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172084943] [2023-11-28 23:52:54,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:54,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113621992] [2023-11-28 23:52:54,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113621992] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:52:54,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:52:54,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-11-28 23:52:54,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247143241] [2023-11-28 23:52:54,225 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:54,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-28 23:52:54,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:54,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-28 23:52:54,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-11-28 23:52:54,226 INFO L87 Difference]: Start difference. First operand 210 states and 248 transitions. Second operand has 16 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-28 23:52:54,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:52:54,868 INFO L93 Difference]: Finished difference Result 282 states and 329 transitions. [2023-11-28 23:52:54,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-28 23:52:54,868 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 61 [2023-11-28 23:52:54,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:52:54,870 INFO L225 Difference]: With dead ends: 282 [2023-11-28 23:52:54,870 INFO L226 Difference]: Without dead ends: 208 [2023-11-28 23:52:54,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=216, Invalid=840, Unknown=0, NotChecked=0, Total=1056 [2023-11-28 23:52:54,872 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 131 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:52:54,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 171 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 23:52:54,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-11-28 23:52:54,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 196. [2023-11-28 23:52:54,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 176 states have (on average 1.1477272727272727) internal successors, (202), 179 states have internal predecessors, (202), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-28 23:52:54,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 230 transitions. [2023-11-28 23:52:54,884 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 230 transitions. Word has length 61 [2023-11-28 23:52:54,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:52:54,885 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 230 transitions. [2023-11-28 23:52:54,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 4 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-28 23:52:54,885 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 230 transitions. [2023-11-28 23:52:54,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-28 23:52:54,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:52:54,886 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:54,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-28 23:52:55,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-28 23:52:55,086 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:52:55,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:55,087 INFO L85 PathProgramCache]: Analyzing trace with hash 370301849, now seen corresponding path program 2 times [2023-11-28 23:52:55,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:55,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353179288] [2023-11-28 23:52:55,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:55,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:55,094 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:55,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [533372216] [2023-11-28 23:52:55,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:52:55,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:55,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:55,095 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:55,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-28 23:52:55,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:52:55,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:52:55,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-28 23:52:55,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:52:55,295 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-28 23:52:55,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:52:55,971 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-28 23:52:55,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:52:55,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353179288] [2023-11-28 23:52:55,971 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:52:55,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533372216] [2023-11-28 23:52:55,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533372216] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:52:55,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:52:55,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-11-28 23:52:55,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690794463] [2023-11-28 23:52:55,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:52:55,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-28 23:52:55,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:52:55,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-28 23:52:55,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-11-28 23:52:55,974 INFO L87 Difference]: Start difference. First operand 196 states and 230 transitions. Second operand has 16 states, 15 states have (on average 5.2) internal successors, (78), 14 states have internal predecessors, (78), 7 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-28 23:52:56,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:52:56,469 INFO L93 Difference]: Finished difference Result 220 states and 254 transitions. [2023-11-28 23:52:56,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-28 23:52:56,469 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.2) internal successors, (78), 14 states have internal predecessors, (78), 7 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 61 [2023-11-28 23:52:56,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:52:56,470 INFO L225 Difference]: With dead ends: 220 [2023-11-28 23:52:56,470 INFO L226 Difference]: Without dead ends: 115 [2023-11-28 23:52:56,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2023-11-28 23:52:56,471 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 126 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 23:52:56,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 202 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 23:52:56,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-28 23:52:56,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 101. [2023-11-28 23:52:56,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 89 states have (on average 1.0561797752808988) internal successors, (94), 90 states have internal predecessors, (94), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-28 23:52:56,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2023-11-28 23:52:56,480 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 61 [2023-11-28 23:52:56,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:52:56,480 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2023-11-28 23:52:56,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.2) internal successors, (78), 14 states have internal predecessors, (78), 7 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-28 23:52:56,480 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2023-11-28 23:52:56,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-28 23:52:56,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:52:56,481 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:52:56,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-28 23:52:56,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-28 23:52:56,682 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:52:56,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:52:56,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1158020315, now seen corresponding path program 1 times [2023-11-28 23:52:56,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:52:56,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224195571] [2023-11-28 23:52:56,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:56,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:52:56,689 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:52:56,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607562846] [2023-11-28 23:52:56,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:52:56,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:52:56,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:52:56,690 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:52:56,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-28 23:52:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:52:56,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-28 23:52:56,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:53:02,310 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-28 23:53:02,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:53:07,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:53:07,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224195571] [2023-11-28 23:53:07,486 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:53:07,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607562846] [2023-11-28 23:53:07,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607562846] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:53:07,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:53:07,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-28 23:53:07,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187206103] [2023-11-28 23:53:07,487 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 23:53:07,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-28 23:53:07,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:53:07,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-28 23:53:07,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=320, Unknown=1, NotChecked=0, Total=380 [2023-11-28 23:53:07,488 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-28 23:53:11,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.71s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:53:19,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:53:19,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:53:19,242 INFO L93 Difference]: Finished difference Result 106 states and 114 transitions. [2023-11-28 23:53:19,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-28 23:53:19,243 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 63 [2023-11-28 23:53:19,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:53:19,244 INFO L225 Difference]: With dead ends: 106 [2023-11-28 23:53:19,244 INFO L226 Difference]: Without dead ends: 105 [2023-11-28 23:53:19,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=112, Invalid=589, Unknown=1, NotChecked=0, Total=702 [2023-11-28 23:53:19,245 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 37 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-11-28 23:53:19,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 175 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 460 Invalid, 1 Unknown, 0 Unchecked, 10.8s Time] [2023-11-28 23:53:19,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-28 23:53:19,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 101. [2023-11-28 23:53:19,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 89 states have (on average 1.0449438202247192) internal successors, (93), 90 states have internal predecessors, (93), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-28 23:53:19,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2023-11-28 23:53:19,260 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 63 [2023-11-28 23:53:19,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:53:19,260 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2023-11-28 23:53:19,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-28 23:53:19,261 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2023-11-28 23:53:19,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-28 23:53:19,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:53:19,262 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:53:19,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-28 23:53:19,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-28 23:53:19,462 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:53:19,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:53:19,463 INFO L85 PathProgramCache]: Analyzing trace with hash -622207013, now seen corresponding path program 2 times [2023-11-28 23:53:19,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:53:19,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662764776] [2023-11-28 23:53:19,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:53:19,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:53:19,469 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:53:19,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141429915] [2023-11-28 23:53:19,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:53:19,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:53:19,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:53:19,470 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:53:19,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-28 23:53:19,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:53:19,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:53:19,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-28 23:53:19,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:54:03,726 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-28 23:54:03,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:54:21,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:54:21,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662764776] [2023-11-28 23:54:21,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:54:21,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141429915] [2023-11-28 23:54:21,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141429915] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:54:21,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:54:21,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-11-28 23:54:21,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161263630] [2023-11-28 23:54:21,905 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 23:54:21,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-28 23:54:21,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:54:21,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-28 23:54:21,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=554, Unknown=9, NotChecked=0, Total=650 [2023-11-28 23:54:21,906 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-28 23:54:27,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:54:29,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:54:31,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:54:35,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:54:36,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:54:39,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:54:44,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:54:48,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:54:58,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:55:02,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:55:23,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:55:27,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:55:31,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:55:35,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:55:39,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:55:44,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:55:48,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:55:52,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:55:56,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:56:00,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:56:04,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.81s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:56:13,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:56:15,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:56:17,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:56:19,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:56:23,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:56:29,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:56:33,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:56:35,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:56:46,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:56:50,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:56:54,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:56:59,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:57:03,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:57:07,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:57:08,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:57:25,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:57:29,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:57:33,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:57:36,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.70s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:57:54,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:57:59,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-11-28 23:57:59,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:57:59,496 INFO L93 Difference]: Finished difference Result 115 states and 122 transitions. [2023-11-28 23:57:59,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-28 23:57:59,497 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 63 [2023-11-28 23:57:59,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:57:59,498 INFO L225 Difference]: With dead ends: 115 [2023-11-28 23:57:59,498 INFO L226 Difference]: Without dead ends: 101 [2023-11-28 23:57:59,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 122.3s TimeCoverageRelationStatistics Valid=172, Invalid=1144, Unknown=16, NotChecked=0, Total=1332 [2023-11-28 23:57:59,499 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 48 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 0 mSolverCounterUnsat, 29 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 153.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 29 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 154.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:57:59,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 208 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 751 Invalid, 29 Unknown, 0 Unchecked, 154.2s Time] [2023-11-28 23:57:59,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-28 23:57:59,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-11-28 23:57:59,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 90 states have internal predecessors, (92), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-28 23:57:59,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2023-11-28 23:57:59,514 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 63 [2023-11-28 23:57:59,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:57:59,514 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2023-11-28 23:57:59,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 4 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-28 23:57:59,515 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2023-11-28 23:57:59,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-28 23:57:59,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:57:59,516 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:57:59,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-28 23:57:59,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-28 23:57:59,716 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:57:59,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:57:59,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1760921247, now seen corresponding path program 2 times [2023-11-28 23:57:59,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:57:59,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904164152] [2023-11-28 23:57:59,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:57:59,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:57:59,723 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:57:59,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [572211081] [2023-11-28 23:57:59,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:57:59,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:57:59,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:57:59,724 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:57:59,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-28 23:57:59,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:57:59,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:57:59,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-28 23:57:59,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:58:00,805 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-28 23:58:00,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:58:19,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:58:19,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904164152] [2023-11-28 23:58:19,555 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:58:19,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572211081] [2023-11-28 23:58:19,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572211081] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:58:19,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:58:19,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-28 23:58:19,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181670203] [2023-11-28 23:58:19,556 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-28 23:58:19,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-28 23:58:19,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:58:19,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-28 23:58:19,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=656, Unknown=2, NotChecked=0, Total=870 [2023-11-28 23:58:19,557 INFO L87 Difference]: Start difference. First operand 101 states and 108 transitions. Second operand has 18 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-28 23:58:20,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:58:20,553 INFO L93 Difference]: Finished difference Result 115 states and 121 transitions. [2023-11-28 23:58:20,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-28 23:58:20,553 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 67 [2023-11-28 23:58:20,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:58:20,554 INFO L225 Difference]: With dead ends: 115 [2023-11-28 23:58:20,554 INFO L226 Difference]: Without dead ends: 101 [2023-11-28 23:58:20,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=454, Invalid=1436, Unknown=2, NotChecked=0, Total=1892 [2023-11-28 23:58:20,556 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 107 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 23:58:20,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 173 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 23:58:20,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-28 23:58:20,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-11-28 23:58:20,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 89 states have (on average 1.0224719101123596) internal successors, (91), 90 states have internal predecessors, (91), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-28 23:58:20,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions. [2023-11-28 23:58:20,572 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 67 [2023-11-28 23:58:20,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:58:20,573 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions. [2023-11-28 23:58:20,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-28 23:58:20,573 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions. [2023-11-28 23:58:20,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-28 23:58:20,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:58:20,574 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:58:20,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-28 23:58:20,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-28 23:58:20,775 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:58:20,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:58:20,775 INFO L85 PathProgramCache]: Analyzing trace with hash -846459818, now seen corresponding path program 1 times [2023-11-28 23:58:20,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:58:20,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372421763] [2023-11-28 23:58:20,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:58:20,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:58:20,782 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:58:20,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [339217645] [2023-11-28 23:58:20,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:58:20,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:58:20,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:58:20,784 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:58:20,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-28 23:58:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:58:20,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-28 23:58:20,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:58:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-28 23:58:20,988 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:58:21,126 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-28 23:58:21,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:58:21,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372421763] [2023-11-28 23:58:21,126 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:58:21,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339217645] [2023-11-28 23:58:21,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339217645] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:58:21,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-28 23:58:21,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-28 23:58:21,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934113456] [2023-11-28 23:58:21,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-28 23:58:21,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-28 23:58:21,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:58:21,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-28 23:58:21,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-11-28 23:58:21,128 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 12 states have internal predecessors, (94), 8 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2023-11-28 23:58:21,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:58:21,404 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2023-11-28 23:58:21,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:58:21,405 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 12 states have internal predecessors, (94), 8 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) Word has length 74 [2023-11-28 23:58:21,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:58:21,406 INFO L225 Difference]: With dead ends: 101 [2023-11-28 23:58:21,406 INFO L226 Difference]: Without dead ends: 100 [2023-11-28 23:58:21,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2023-11-28 23:58:21,407 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 68 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 23:58:21,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 142 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 23:58:21,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-28 23:58:21,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 70. [2023-11-28 23:58:21,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 61 states have (on average 1.0163934426229508) internal successors, (62), 61 states have internal predecessors, (62), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-28 23:58:21,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2023-11-28 23:58:21,417 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 74 [2023-11-28 23:58:21,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:58:21,418 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2023-11-28 23:58:21,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.545454545454545) internal successors, (94), 12 states have internal predecessors, (94), 8 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2023-11-28 23:58:21,418 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2023-11-28 23:58:21,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-28 23:58:21,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 23:58:21,419 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:58:21,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-28 23:58:21,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-28 23:58:21,619 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-28 23:58:21,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:58:21,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1882214736, now seen corresponding path program 3 times [2023-11-28 23:58:21,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:58:21,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768364309] [2023-11-28 23:58:21,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:58:21,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:58:21,627 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-28 23:58:21,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752964230] [2023-11-28 23:58:21,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 23:58:21,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:58:21,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:58:21,629 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:58:21,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-28 23:58:21,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-28 23:58:21,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:58:21,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-28 23:58:21,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:58:22,480 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-28 23:58:22,480 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:58:22,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:58:22,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768364309] [2023-11-28 23:58:22,480 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-28 23:58:22,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752964230] [2023-11-28 23:58:22,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752964230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:58:22,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:58:22,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-28 23:58:22,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570651300] [2023-11-28 23:58:22,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:58:22,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-28 23:58:22,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:58:22,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-28 23:58:22,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-28 23:58:22,482 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 11 states, 10 states have (on average 4.3) internal successors, (43), 11 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:58:24,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 23:58:24,758 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2023-11-28 23:58:24,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 23:58:24,758 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 11 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2023-11-28 23:58:24,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 23:58:24,759 INFO L225 Difference]: With dead ends: 100 [2023-11-28 23:58:24,759 INFO L226 Difference]: Without dead ends: 0 [2023-11-28 23:58:24,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-28 23:58:24,759 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 12 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-28 23:58:24,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 205 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-28 23:58:24,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-28 23:58:24,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-28 23:58:24,760 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) [2023-11-28 23:58:24,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-28 23:58:24,760 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 81 [2023-11-28 23:58:24,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 23:58:24,760 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-28 23:58:24,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 11 states have internal predecessors, (43), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-28 23:58:24,761 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-28 23:58:24,761 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-28 23:58:24,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-11-28 23:58:24,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-11-28 23:58:24,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-11-28 23:58:24,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-11-28 23:58:24,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-11-28 23:58:24,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-11-28 23:58:24,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2023-11-28 23:58:24,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2023-11-28 23:58:24,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2023-11-28 23:58:24,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2023-11-28 23:58:24,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-11-28 23:58:24,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-11-28 23:58:24,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-11-28 23:58:24,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-11-28 23:58:24,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-11-28 23:58:24,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-11-28 23:58:24,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-28 23:58:24,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-28 23:58:24,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 00:03:09,683 WARN L293 SmtUtils]: Spent 4.74m on a formula simplification. DAG size of input: 193 DAG size of output: 142 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-11-29 00:04:27,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2023-11-29 00:04:27,582 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-11-29 00:04:27,583 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.pop(UndoableWrapperScript.java:61) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:67) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:625) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:230) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter(HoareAnnotationComposer.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.(HoareAnnotationComposer.java:105) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeIcfgHoareAnnotation(NwaCegarLoop.java:539) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop$CegarLoopResultBuilder.getResult(AbstractCegarLoop.java:873) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 40 more [2023-11-29 00:04:27,586 INFO L158 Benchmark]: Toolchain (without parser) took 748861.85ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 124.7MB in the beginning and 86.5MB in the end (delta: 38.2MB). Peak memory consumption was 112.1MB. Max. memory is 16.1GB. [2023-11-29 00:04:27,586 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 115.3MB. Free memory was 89.4MB in the beginning and 89.2MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:04:27,587 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.69ms. Allocated memory is still 155.2MB. Free memory was 124.7MB in the beginning and 114.3MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 00:04:27,587 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.62ms. Allocated memory is still 155.2MB. Free memory was 114.3MB in the beginning and 112.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:04:27,587 INFO L158 Benchmark]: Boogie Preprocessor took 29.54ms. Allocated memory is still 155.2MB. Free memory was 112.8MB in the beginning and 110.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:04:27,588 INFO L158 Benchmark]: RCFGBuilder took 383.41ms. Allocated memory is still 155.2MB. Free memory was 110.8MB in the beginning and 97.5MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 00:04:27,588 INFO L158 Benchmark]: TraceAbstraction took 748216.68ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 96.8MB in the beginning and 86.5MB in the end (delta: 10.3MB). Peak memory consumption was 82.7MB. Max. memory is 16.1GB. [2023-11-29 00:04:27,589 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 115.3MB. Free memory was 89.4MB in the beginning and 89.2MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.69ms. Allocated memory is still 155.2MB. Free memory was 124.7MB in the beginning and 114.3MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.62ms. Allocated memory is still 155.2MB. Free memory was 114.3MB in the beginning and 112.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.54ms. Allocated memory is still 155.2MB. Free memory was 112.8MB in the beginning and 110.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 383.41ms. Allocated memory is still 155.2MB. Free memory was 110.8MB in the beginning and 97.5MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 748216.68ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 96.8MB in the beginning and 86.5MB in the end (delta: 10.3MB). Peak memory consumption was 82.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 34f640e37bae156029b1a359a4abe58394472212f3f36aea9107706542ec544a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:04:29,417 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:04:29,505 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-32bit-Automizer_Bitvector.epf [2023-11-29 00:04:29,521 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:04:29,522 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:04:29,557 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:04:29,558 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:04:29,559 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:04:29,560 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:04:29,560 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:04:29,561 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:04:29,562 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:04:29,563 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:04:29,564 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:04:29,565 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:04:29,565 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:04:29,566 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:04:29,567 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:04:29,567 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:04:29,568 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:04:29,568 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:04:29,569 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:04:29,569 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:04:29,570 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:04:29,570 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 00:04:29,571 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-29 00:04:29,571 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 00:04:29,572 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:04:29,572 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:04:29,573 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:04:29,573 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:04:29,574 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:04:29,574 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:04:29,575 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:04:29,575 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:04:29,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:04:29,576 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:04:29,576 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:04:29,576 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:04:29,576 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 00:04:29,577 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 00:04:29,577 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:04:29,577 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:04:29,578 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:04:29,578 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:04:29,578 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:04:29,578 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 00:04:29,579 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_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34f640e37bae156029b1a359a4abe58394472212f3f36aea9107706542ec544a [2023-11-29 00:04:29,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:04:30,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:04:30,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:04:30,011 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:04:30,011 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:04:30,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c [2023-11-29 00:04:33,326 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:04:33,543 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:04:33,544 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound5.c [2023-11-29 00:04:33,553 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/data/c0315b56e/e1f7a8605f18454ea3ca20ffced015ba/FLAG9965b0600 [2023-11-29 00:04:33,569 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/data/c0315b56e/e1f7a8605f18454ea3ca20ffced015ba [2023-11-29 00:04:33,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:04:33,574 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:04:33,575 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:04:33,575 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:04:33,580 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:04:33,581 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:04:33" (1/1) ... [2023-11-29 00:04:33,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@168f566b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:33, skipping insertion in model container [2023-11-29 00:04:33,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:04:33" (1/1) ... [2023-11-29 00:04:33,603 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:04:33,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:04:33,791 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:04:33,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:04:33,830 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:04:33,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:33 WrapperNode [2023-11-29 00:04:33,831 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:04:33,832 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:04:33,832 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:04:33,832 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:04:33,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:33" (1/1) ... [2023-11-29 00:04:33,849 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:33" (1/1) ... [2023-11-29 00:04:33,872 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2023-11-29 00:04:33,872 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:04:33,873 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:04:33,874 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:04:33,874 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:04:33,883 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:33" (1/1) ... [2023-11-29 00:04:33,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:33" (1/1) ... [2023-11-29 00:04:33,885 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:33" (1/1) ... [2023-11-29 00:04:33,896 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 00:04:33,897 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:33" (1/1) ... [2023-11-29 00:04:33,897 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:33" (1/1) ... [2023-11-29 00:04:33,903 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:33" (1/1) ... [2023-11-29 00:04:33,907 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:33" (1/1) ... [2023-11-29 00:04:33,908 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:33" (1/1) ... [2023-11-29 00:04:33,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:33" (1/1) ... [2023-11-29 00:04:33,912 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:04:33,913 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:04:33,913 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:04:33,913 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:04:33,914 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:33" (1/1) ... [2023-11-29 00:04:33,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:04:33,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:04:33,939 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:04:33,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:04:33,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:04:33,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 00:04:33,972 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 00:04:33,972 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 00:04:33,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:04:33,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:04:33,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 00:04:33,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 00:04:34,034 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:04:34,036 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:04:53,612 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:04:53,646 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:04:53,646 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:04:53,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:04:53 BoogieIcfgContainer [2023-11-29 00:04:53,647 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:04:53,649 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:04:53,649 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:04:53,652 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:04:53,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:04:33" (1/3) ... [2023-11-29 00:04:53,653 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569f2632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:04:53, skipping insertion in model container [2023-11-29 00:04:53,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:04:33" (2/3) ... [2023-11-29 00:04:53,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569f2632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:04:53, skipping insertion in model container [2023-11-29 00:04:53,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:04:53" (3/3) ... [2023-11-29 00:04:53,656 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound5.c [2023-11-29 00:04:53,674 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:04:53,675 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-29 00:04:53,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:04:53,734 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;@2a4e9c99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:04:53,734 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-29 00:04:53,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 45 states have internal predecessors, (51), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 00:04:53,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-29 00:04:53,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:53,747 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:53,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-29 00:04:53,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:53,754 INFO L85 PathProgramCache]: Analyzing trace with hash -783542553, now seen corresponding path program 1 times [2023-11-29 00:04:53,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:04:53,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892789785] [2023-11-29 00:04:53,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:53,767 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:04:53,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:04:53,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:04:53,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 00:04:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:53,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 00:04:53,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:04:53,975 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 00:04:53,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:04:53,976 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:04:53,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892789785] [2023-11-29 00:04:53,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892789785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:04:53,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:04:53,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:04:53,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086348361] [2023-11-29 00:04:53,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:04:53,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:04:53,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:04:54,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:04:54,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:04:54,026 INFO L87 Difference]: Start difference. First operand has 53 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 45 states have internal predecessors, (51), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:04:54,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:04:54,067 INFO L93 Difference]: Finished difference Result 101 states and 124 transitions. [2023-11-29 00:04:54,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:04:54,070 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2023-11-29 00:04:54,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:04:54,079 INFO L225 Difference]: With dead ends: 101 [2023-11-29 00:04:54,080 INFO L226 Difference]: Without dead ends: 47 [2023-11-29 00:04:54,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:04:54,089 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:04:54,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:04:54,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-29 00:04:54,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-11-29 00:04:54,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 28 states have (on average 1.5) internal successors, (42), 40 states have internal predecessors, (42), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-29 00:04:54,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2023-11-29 00:04:54,142 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 20 [2023-11-29 00:04:54,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:04:54,143 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2023-11-29 00:04:54,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-29 00:04:54,144 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2023-11-29 00:04:54,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-29 00:04:54,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:04:54,146 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:04:54,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:04:54,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:04:54,347 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2023-11-29 00:04:54,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:04:54,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1613567575, now seen corresponding path program 1 times [2023-11-29 00:04:54,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:04:54,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319744653] [2023-11-29 00:04:54,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:04:54,350 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:04:54,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:04:54,351 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:04:54,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f23cb75-c1da-4474-a3a7-caa3c32ac1aa/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 00:04:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:04:54,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:04:54,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:04:55,033 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 00:04:55,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:05:14,611 WARN L876 $PredicateComparison]: unable to prove that (bvsle (_ bv170141183460469231722463931679029329920 127) (bvmul ((_ sign_extend 63) ((_ sign_extend 32) |c_ULTIMATE.start_main_~a~0#1|)) ((_ sign_extend 63) ((_ sign_extend 32) |c_ULTIMATE.start_main_~b~0#1|)))) is different from true [2023-11-29 00:05:39,359 WARN L293 SmtUtils]: Spent 8.07s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:05:55,557 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:06:03,775 WARN L876 $PredicateComparison]: unable to prove that (or (and (forall ((|v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4| (_ BitVec 32))) (or (bvsle (_ bv170141183460469231722463931679029329920 127) (bvmul ((_ sign_extend 63) ((_ sign_extend 32) |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_3|)) ((_ sign_extend 63) ((_ sign_extend 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4|)))) (bvsge |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_3| (_ bv0 32)))) (forall ((|v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4| (_ BitVec 32))) (or (bvsle (_ bv170141183460469231722463931679029329920 127) (bvmul ((_ sign_extend 63) ((_ sign_extend 32) |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_3|)) ((_ sign_extend 63) ((_ sign_extend 32) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4|)))) (bvsle |v_ULTIMATE.start_main_~b~0#1_BEFORE_CALL_3| (_ bv5 32))))) (not (= |c_assume_abort_if_not_#in~cond| (_ bv0 32)))) is different from true [2023-11-29 00:06:20,075 WARN L293 SmtUtils]: Spent 8.07s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:06:36,301 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 00:06:52,702 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)