./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 72cd0a4215707a62376e213156123902caf611a87605e41064b672632b6ef1f9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:23:08,185 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:23:08,257 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-23 21:23:08,263 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:23:08,264 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:23:08,291 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:23:08,292 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:23:08,293 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:23:08,293 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:23:08,294 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:23:08,294 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:23:08,295 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:23:08,296 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:23:08,296 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:23:08,296 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:23:08,297 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:23:08,297 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:23:08,298 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:23:08,298 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:23:08,299 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:23:08,299 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:23:08,300 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:23:08,301 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:23:08,301 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:23:08,302 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:23:08,302 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:23:08,302 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:23:08,303 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:23:08,303 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:23:08,303 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:23:08,304 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:23:08,304 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:23:08,304 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:23:08,305 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:23:08,305 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:23:08,305 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:23:08,305 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:23:08,306 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:23:08,306 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:23:08,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:23:08,306 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:23:08,307 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:23:08,307 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:23:08,307 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:23:08,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:23:08,307 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:23:08,308 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:23:08,308 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:23:08,308 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:23:08,308 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72cd0a4215707a62376e213156123902caf611a87605e41064b672632b6ef1f9 [2023-11-23 21:23:08,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:23:08,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:23:08,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:23:08,578 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:23:08,578 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:23:08,580 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c [2023-11-23 21:23:11,679 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:23:11,965 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:23:11,966 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound2.c [2023-11-23 21:23:11,976 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/data/5450b022b/c70fa1eea5ba491f9ce0d4d6da355e35/FLAG1dd076744 [2023-11-23 21:23:11,993 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/data/5450b022b/c70fa1eea5ba491f9ce0d4d6da355e35 [2023-11-23 21:23:12,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:23:12,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:23:12,011 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:23:12,011 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:23:12,016 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:23:12,017 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:23:11" (1/1) ... [2023-11-23 21:23:12,018 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bbf98bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:12, skipping insertion in model container [2023-11-23 21:23:12,018 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:23:11" (1/1) ... [2023-11-23 21:23:12,044 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:23:12,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:23:12,296 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:23:12,332 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:23:12,347 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:23:12,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:12 WrapperNode [2023-11-23 21:23:12,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:23:12,349 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:23:12,349 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:23:12,349 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:23:12,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:12" (1/1) ... [2023-11-23 21:23:12,365 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:12" (1/1) ... [2023-11-23 21:23:12,395 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 116 [2023-11-23 21:23:12,396 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:23:12,397 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:23:12,397 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:23:12,397 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:23:12,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:12" (1/1) ... [2023-11-23 21:23:12,406 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:12" (1/1) ... [2023-11-23 21:23:12,408 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:12" (1/1) ... [2023-11-23 21:23:12,408 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:12" (1/1) ... [2023-11-23 21:23:12,413 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:12" (1/1) ... [2023-11-23 21:23:12,417 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:12" (1/1) ... [2023-11-23 21:23:12,419 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:12" (1/1) ... [2023-11-23 21:23:12,420 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:12" (1/1) ... [2023-11-23 21:23:12,422 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:23:12,423 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:23:12,423 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:23:12,424 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:23:12,425 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:12" (1/1) ... [2023-11-23 21:23:12,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:23:12,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:12,462 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:23:12,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:23:12,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:23:12,508 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:23:12,508 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:23:12,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:23:12,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:23:12,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:23:12,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:23:12,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:23:12,575 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:23:12,577 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:23:13,019 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:23:13,079 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:23:13,080 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:23:13,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:23:13 BoogieIcfgContainer [2023-11-23 21:23:13,088 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:23:13,092 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:23:13,093 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:23:13,096 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:23:13,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:23:11" (1/3) ... [2023-11-23 21:23:13,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7bd150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:23:13, skipping insertion in model container [2023-11-23 21:23:13,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:23:12" (2/3) ... [2023-11-23 21:23:13,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d7bd150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:23:13, skipping insertion in model container [2023-11-23 21:23:13,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:23:13" (3/3) ... [2023-11-23 21:23:13,104 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound2.c [2023-11-23 21:23:13,130 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:23:13,130 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 58 error locations. [2023-11-23 21:23:13,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:23:13,205 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=FINITE_AUTOMATA, 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;@7f65f316, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:23:13,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2023-11-23 21:23:13,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 67 states have (on average 1.9104477611940298) internal successors, (128), 125 states have internal predecessors, (128), 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) [2023-11-23 21:23:13,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 21:23:13,218 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:13,219 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:13,219 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:13,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:13,225 INFO L85 PathProgramCache]: Analyzing trace with hash 688830049, now seen corresponding path program 1 times [2023-11-23 21:23:13,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:13,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904646297] [2023-11-23 21:23:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:13,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:13,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:13,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:13,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904646297] [2023-11-23 21:23:13,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904646297] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:13,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:13,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:23:13,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593118188] [2023-11-23 21:23:13,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:13,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:23:13,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:13,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:23:13,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:23:13,465 INFO L87 Difference]: Start difference. First operand has 132 states, 67 states have (on average 1.9104477611940298) internal successors, (128), 125 states have internal predecessors, (128), 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:23:13,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:13,641 INFO L93 Difference]: Finished difference Result 180 states and 184 transitions. [2023-11-23 21:23:13,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:23:13,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 9 [2023-11-23 21:23:13,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:13,653 INFO L225 Difference]: With dead ends: 180 [2023-11-23 21:23:13,653 INFO L226 Difference]: Without dead ends: 125 [2023-11-23 21:23:13,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:23:13,661 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 118 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:13,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 72 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:23:13,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-23 21:23:13,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2023-11-23 21:23:13,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 66 states have (on average 1.8333333333333333) internal successors, (121), 119 states have internal predecessors, (121), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:23:13,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2023-11-23 21:23:13,708 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 9 [2023-11-23 21:23:13,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:13,710 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2023-11-23 21:23:13,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:23:13,710 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2023-11-23 21:23:13,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 21:23:13,712 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:13,712 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:13,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:23:13,712 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:13,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:13,713 INFO L85 PathProgramCache]: Analyzing trace with hash -121104922, now seen corresponding path program 1 times [2023-11-23 21:23:13,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:13,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490527276] [2023-11-23 21:23:13,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:13,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:13,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:13,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:13,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490527276] [2023-11-23 21:23:13,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490527276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:13,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:13,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:23:13,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315023217] [2023-11-23 21:23:13,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:13,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:23:13,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:13,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:23:13,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:23:13,784 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:23:13,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:13,940 INFO L93 Difference]: Finished difference Result 125 states and 127 transitions. [2023-11-23 21:23:13,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:23:13,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 10 [2023-11-23 21:23:13,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:13,944 INFO L225 Difference]: With dead ends: 125 [2023-11-23 21:23:13,944 INFO L226 Difference]: Without dead ends: 121 [2023-11-23 21:23:13,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:23:13,947 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 112 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:13,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 69 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:23:13,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-23 21:23:13,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-11-23 21:23:13,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 66 states have (on average 1.7727272727272727) internal successors, (117), 115 states have internal predecessors, (117), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:23:13,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2023-11-23 21:23:13,977 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 10 [2023-11-23 21:23:13,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:13,978 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2023-11-23 21:23:13,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:23:13,984 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2023-11-23 21:23:13,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:23:13,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:13,985 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:13,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:23:13,985 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:13,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:13,986 INFO L85 PathProgramCache]: Analyzing trace with hash 540714755, now seen corresponding path program 1 times [2023-11-23 21:23:13,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:13,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001372341] [2023-11-23 21:23:13,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:13,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:14,100 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:14,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:14,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001372341] [2023-11-23 21:23:14,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001372341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:14,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:14,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:14,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110918463] [2023-11-23 21:23:14,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:14,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:23:14,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:14,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:23:14,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:23:14,104 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:23:14,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:14,233 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2023-11-23 21:23:14,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:23:14,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 11 [2023-11-23 21:23:14,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:14,236 INFO L225 Difference]: With dead ends: 121 [2023-11-23 21:23:14,236 INFO L226 Difference]: Without dead ends: 118 [2023-11-23 21:23:14,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:14,238 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 219 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:14,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 57 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:23:14,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-11-23 21:23:14,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2023-11-23 21:23:14,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 66 states have (on average 1.7272727272727273) internal successors, (114), 112 states have internal predecessors, (114), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:23:14,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2023-11-23 21:23:14,252 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 11 [2023-11-23 21:23:14,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:14,252 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2023-11-23 21:23:14,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:23:14,253 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2023-11-23 21:23:14,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 21:23:14,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:14,254 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:14,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:23:14,254 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:14,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:14,255 INFO L85 PathProgramCache]: Analyzing trace with hash -417711736, now seen corresponding path program 1 times [2023-11-23 21:23:14,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:14,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168915894] [2023-11-23 21:23:14,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:14,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:14,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:14,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:14,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168915894] [2023-11-23 21:23:14,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168915894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:14,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:14,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:14,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934001692] [2023-11-23 21:23:14,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:14,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:23:14,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:14,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:23:14,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:23:14,322 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:23:14,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:14,432 INFO L93 Difference]: Finished difference Result 118 states and 120 transitions. [2023-11-23 21:23:14,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:23:14,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2023-11-23 21:23:14,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:14,434 INFO L225 Difference]: With dead ends: 118 [2023-11-23 21:23:14,434 INFO L226 Difference]: Without dead ends: 115 [2023-11-23 21:23:14,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:14,436 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 212 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:14,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 57 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:23:14,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-23 21:23:14,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-11-23 21:23:14,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 66 states have (on average 1.6818181818181819) internal successors, (111), 109 states have internal predecessors, (111), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:23:14,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 117 transitions. [2023-11-23 21:23:14,448 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 117 transitions. Word has length 12 [2023-11-23 21:23:14,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:14,448 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 117 transitions. [2023-11-23 21:23:14,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:23:14,449 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 117 transitions. [2023-11-23 21:23:14,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 21:23:14,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:14,450 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:14,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:23:14,450 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:14,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:14,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1989018102, now seen corresponding path program 1 times [2023-11-23 21:23:14,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:14,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073938733] [2023-11-23 21:23:14,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:14,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:14,464 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:14,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [330455804] [2023-11-23 21:23:14,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:14,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:14,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:14,468 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:14,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:23:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:14,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:23:14,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:14,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:14,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:14,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:14,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073938733] [2023-11-23 21:23:14,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:14,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330455804] [2023-11-23 21:23:14,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330455804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:14,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:14,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:23:14,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054655106] [2023-11-23 21:23:14,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:14,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:23:14,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:14,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:23:14,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:23:14,587 INFO L87 Difference]: Start difference. First operand 115 states and 117 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:14,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:14,672 INFO L93 Difference]: Finished difference Result 218 states and 222 transitions. [2023-11-23 21:23:14,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:23:14,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-11-23 21:23:14,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:14,676 INFO L225 Difference]: With dead ends: 218 [2023-11-23 21:23:14,676 INFO L226 Difference]: Without dead ends: 212 [2023-11-23 21:23:14,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:23:14,679 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 95 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:14,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 202 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:23:14,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-23 21:23:14,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 140. [2023-11-23 21:23:14,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 90 states have (on average 1.6666666666666667) internal successors, (150), 133 states have internal predecessors, (150), 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) [2023-11-23 21:23:14,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 158 transitions. [2023-11-23 21:23:14,727 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 158 transitions. Word has length 14 [2023-11-23 21:23:14,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:14,728 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 158 transitions. [2023-11-23 21:23:14,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:14,729 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 158 transitions. [2023-11-23 21:23:14,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 21:23:14,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:14,731 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:14,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:14,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:14,945 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:14,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:14,946 INFO L85 PathProgramCache]: Analyzing trace with hash -185947508, now seen corresponding path program 1 times [2023-11-23 21:23:14,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:14,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251858905] [2023-11-23 21:23:14,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:14,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:14,958 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:14,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1590639178] [2023-11-23 21:23:14,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:14,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:14,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:14,961 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:14,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:23:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:15,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:23:15,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:15,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:15,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:15,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:15,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251858905] [2023-11-23 21:23:15,028 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:15,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590639178] [2023-11-23 21:23:15,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590639178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:15,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:15,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:23:15,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786990980] [2023-11-23 21:23:15,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:15,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:23:15,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:15,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:23:15,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:23:15,031 INFO L87 Difference]: Start difference. First operand 140 states and 158 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:15,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:15,090 INFO L93 Difference]: Finished difference Result 243 states and 263 transitions. [2023-11-23 21:23:15,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:23:15,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2023-11-23 21:23:15,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:15,093 INFO L225 Difference]: With dead ends: 243 [2023-11-23 21:23:15,093 INFO L226 Difference]: Without dead ends: 237 [2023-11-23 21:23:15,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:23:15,095 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 93 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:15,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 202 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:23:15,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-11-23 21:23:15,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 189. [2023-11-23 21:23:15,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 138 states have (on average 1.6666666666666667) internal successors, (230), 181 states have internal predecessors, (230), 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) [2023-11-23 21:23:15,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 240 transitions. [2023-11-23 21:23:15,114 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 240 transitions. Word has length 16 [2023-11-23 21:23:15,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:15,114 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 240 transitions. [2023-11-23 21:23:15,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:15,115 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 240 transitions. [2023-11-23 21:23:15,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 21:23:15,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:15,116 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:15,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:15,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:15,333 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:15,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:15,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1693073166, now seen corresponding path program 1 times [2023-11-23 21:23:15,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:15,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611750084] [2023-11-23 21:23:15,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:15,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:15,350 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:15,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [504766293] [2023-11-23 21:23:15,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:15,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:15,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:15,362 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:15,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:23:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:15,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:23:15,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:15,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:15,460 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:15,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:15,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611750084] [2023-11-23 21:23:15,461 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:15,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504766293] [2023-11-23 21:23:15,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504766293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:15,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:15,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:15,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542623679] [2023-11-23 21:23:15,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:15,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:23:15,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:15,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:23:15,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:23:15,464 INFO L87 Difference]: Start difference. First operand 189 states and 240 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:15,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:15,636 INFO L93 Difference]: Finished difference Result 268 states and 311 transitions. [2023-11-23 21:23:15,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:23:15,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-11-23 21:23:15,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:15,639 INFO L225 Difference]: With dead ends: 268 [2023-11-23 21:23:15,639 INFO L226 Difference]: Without dead ends: 266 [2023-11-23 21:23:15,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:15,641 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 177 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:15,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 232 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:23:15,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-23 21:23:15,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 190. [2023-11-23 21:23:15,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 139 states have (on average 1.6546762589928057) internal successors, (230), 182 states have internal predecessors, (230), 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) [2023-11-23 21:23:15,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 240 transitions. [2023-11-23 21:23:15,655 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 240 transitions. Word has length 18 [2023-11-23 21:23:15,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:15,655 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 240 transitions. [2023-11-23 21:23:15,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:15,656 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 240 transitions. [2023-11-23 21:23:15,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 21:23:15,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:15,657 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:15,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:15,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:15,873 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:15,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:15,873 INFO L85 PathProgramCache]: Analyzing trace with hash 945660658, now seen corresponding path program 1 times [2023-11-23 21:23:15,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:15,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058292183] [2023-11-23 21:23:15,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:15,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:15,884 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:15,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1372668913] [2023-11-23 21:23:15,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:15,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:15,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:15,885 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:15,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:23:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:15,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:23:15,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:15,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:15,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:15,956 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:15,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058292183] [2023-11-23 21:23:15,957 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:15,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372668913] [2023-11-23 21:23:15,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372668913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:15,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:15,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:15,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733386113] [2023-11-23 21:23:15,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:15,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:23:15,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:15,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:23:15,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:23:15,959 INFO L87 Difference]: Start difference. First operand 190 states and 240 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:16,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:16,118 INFO L93 Difference]: Finished difference Result 266 states and 309 transitions. [2023-11-23 21:23:16,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:23:16,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-11-23 21:23:16,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:16,121 INFO L225 Difference]: With dead ends: 266 [2023-11-23 21:23:16,121 INFO L226 Difference]: Without dead ends: 264 [2023-11-23 21:23:16,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:16,123 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 172 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:16,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 234 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:23:16,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-23 21:23:16,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 191. [2023-11-23 21:23:16,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 140 states have (on average 1.6428571428571428) internal successors, (230), 183 states have internal predecessors, (230), 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) [2023-11-23 21:23:16,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 240 transitions. [2023-11-23 21:23:16,138 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 240 transitions. Word has length 19 [2023-11-23 21:23:16,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:16,139 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 240 transitions. [2023-11-23 21:23:16,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:16,139 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 240 transitions. [2023-11-23 21:23:16,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 21:23:16,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:16,141 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:16,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:16,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:16,357 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:16,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:16,357 INFO L85 PathProgramCache]: Analyzing trace with hash -749290608, now seen corresponding path program 1 times [2023-11-23 21:23:16,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:16,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032460895] [2023-11-23 21:23:16,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:16,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:16,394 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:16,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1471741469] [2023-11-23 21:23:16,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:16,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:16,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:16,398 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:16,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:23:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:16,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:23:16,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:16,482 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:16,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:16,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032460895] [2023-11-23 21:23:16,483 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:16,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471741469] [2023-11-23 21:23:16,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471741469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:16,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:16,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:16,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079884606] [2023-11-23 21:23:16,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:16,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:23:16,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:16,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:23:16,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:23:16,486 INFO L87 Difference]: Start difference. First operand 191 states and 240 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:16,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:16,651 INFO L93 Difference]: Finished difference Result 253 states and 269 transitions. [2023-11-23 21:23:16,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:23:16,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-11-23 21:23:16,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:16,653 INFO L225 Difference]: With dead ends: 253 [2023-11-23 21:23:16,653 INFO L226 Difference]: Without dead ends: 251 [2023-11-23 21:23:16,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:16,657 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 194 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:16,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 233 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:23:16,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-11-23 21:23:16,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 191. [2023-11-23 21:23:16,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 140 states have (on average 1.6214285714285714) internal successors, (227), 183 states have internal predecessors, (227), 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) [2023-11-23 21:23:16,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 237 transitions. [2023-11-23 21:23:16,672 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 237 transitions. Word has length 20 [2023-11-23 21:23:16,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:16,674 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 237 transitions. [2023-11-23 21:23:16,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:16,674 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 237 transitions. [2023-11-23 21:23:16,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 21:23:16,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:16,675 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:16,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:16,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:16,889 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:16,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:16,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1753172300, now seen corresponding path program 1 times [2023-11-23 21:23:16,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:16,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640749489] [2023-11-23 21:23:16,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:16,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:16,900 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:16,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1351138449] [2023-11-23 21:23:16,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:16,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:16,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:16,904 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:16,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 21:23:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:16,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:23:16,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:16,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:16,987 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:16,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:16,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640749489] [2023-11-23 21:23:16,988 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:16,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351138449] [2023-11-23 21:23:16,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351138449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:16,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:16,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:16,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668336978] [2023-11-23 21:23:16,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:16,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:23:16,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:16,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:23:16,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:23:16,990 INFO L87 Difference]: Start difference. First operand 191 states and 237 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:17,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:17,158 INFO L93 Difference]: Finished difference Result 251 states and 266 transitions. [2023-11-23 21:23:17,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:23:17,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-11-23 21:23:17,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:17,162 INFO L225 Difference]: With dead ends: 251 [2023-11-23 21:23:17,163 INFO L226 Difference]: Without dead ends: 249 [2023-11-23 21:23:17,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:17,166 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 189 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:17,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 235 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:23:17,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-11-23 21:23:17,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 191. [2023-11-23 21:23:17,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 140 states have (on average 1.6) internal successors, (224), 183 states have internal predecessors, (224), 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) [2023-11-23 21:23:17,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 234 transitions. [2023-11-23 21:23:17,182 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 234 transitions. Word has length 21 [2023-11-23 21:23:17,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:17,183 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 234 transitions. [2023-11-23 21:23:17,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:17,183 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 234 transitions. [2023-11-23 21:23:17,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 21:23:17,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:17,184 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:17,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:17,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:17,401 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:17,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:17,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1486233618, now seen corresponding path program 1 times [2023-11-23 21:23:17,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:17,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492045160] [2023-11-23 21:23:17,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:17,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:17,410 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:17,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642663621] [2023-11-23 21:23:17,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:17,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:17,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:17,412 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:17,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 21:23:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:17,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:23:17,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:17,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:17,511 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:17,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:17,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492045160] [2023-11-23 21:23:17,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:17,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642663621] [2023-11-23 21:23:17,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642663621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:17,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:17,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:23:17,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848392855] [2023-11-23 21:23:17,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:17,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:23:17,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:17,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:23:17,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:17,518 INFO L87 Difference]: Start difference. First operand 191 states and 234 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:17,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:17,729 INFO L93 Difference]: Finished difference Result 260 states and 299 transitions. [2023-11-23 21:23:17,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:23:17,730 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-11-23 21:23:17,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:17,732 INFO L225 Difference]: With dead ends: 260 [2023-11-23 21:23:17,732 INFO L226 Difference]: Without dead ends: 258 [2023-11-23 21:23:17,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:23:17,734 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 156 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:17,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 292 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:23:17,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-11-23 21:23:17,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 194. [2023-11-23 21:23:17,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 143 states have (on average 1.5804195804195804) internal successors, (226), 186 states have internal predecessors, (226), 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) [2023-11-23 21:23:17,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 236 transitions. [2023-11-23 21:23:17,748 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 236 transitions. Word has length 22 [2023-11-23 21:23:17,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:17,749 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 236 transitions. [2023-11-23 21:23:17,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:17,749 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 236 transitions. [2023-11-23 21:23:17,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 21:23:17,750 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:17,750 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:17,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:17,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 21:23:17,965 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:17,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:17,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1171398026, now seen corresponding path program 1 times [2023-11-23 21:23:17,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:17,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148692511] [2023-11-23 21:23:17,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:17,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:17,974 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:17,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1710823313] [2023-11-23 21:23:17,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:17,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:17,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:17,977 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:17,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 21:23:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:18,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:23:18,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:18,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:18,077 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:18,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:18,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148692511] [2023-11-23 21:23:18,077 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:18,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710823313] [2023-11-23 21:23:18,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710823313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:18,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:18,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:23:18,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681165477] [2023-11-23 21:23:18,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:18,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:23:18,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:18,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:23:18,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:18,080 INFO L87 Difference]: Start difference. First operand 194 states and 236 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:18,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:18,306 INFO L93 Difference]: Finished difference Result 252 states and 265 transitions. [2023-11-23 21:23:18,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:23:18,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-11-23 21:23:18,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:18,309 INFO L225 Difference]: With dead ends: 252 [2023-11-23 21:23:18,309 INFO L226 Difference]: Without dead ends: 250 [2023-11-23 21:23:18,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:23:18,310 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 180 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:18,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 300 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:23:18,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-11-23 21:23:18,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 194. [2023-11-23 21:23:18,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 143 states have (on average 1.5594405594405594) internal successors, (223), 186 states have internal predecessors, (223), 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) [2023-11-23 21:23:18,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 233 transitions. [2023-11-23 21:23:18,325 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 233 transitions. Word has length 23 [2023-11-23 21:23:18,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:18,326 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 233 transitions. [2023-11-23 21:23:18,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:18,326 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 233 transitions. [2023-11-23 21:23:18,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 21:23:18,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:18,328 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:18,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:18,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 21:23:18,542 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:18,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:18,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1953600364, now seen corresponding path program 1 times [2023-11-23 21:23:18,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:18,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577546367] [2023-11-23 21:23:18,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:18,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:18,552 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:18,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079419783] [2023-11-23 21:23:18,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:18,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:18,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:18,554 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:18,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 21:23:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:18,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:23:18,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:18,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:18,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:18,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:18,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577546367] [2023-11-23 21:23:18,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:18,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079419783] [2023-11-23 21:23:18,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079419783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:18,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:18,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:23:18,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791238206] [2023-11-23 21:23:18,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:18,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:23:18,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:18,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:23:18,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:23:18,738 INFO L87 Difference]: Start difference. First operand 194 states and 233 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:19,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:19,062 INFO L93 Difference]: Finished difference Result 260 states and 293 transitions. [2023-11-23 21:23:19,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:23:19,062 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-11-23 21:23:19,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:19,064 INFO L225 Difference]: With dead ends: 260 [2023-11-23 21:23:19,064 INFO L226 Difference]: Without dead ends: 258 [2023-11-23 21:23:19,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:23:19,066 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 336 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:19,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 187 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:23:19,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-11-23 21:23:19,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 196. [2023-11-23 21:23:19,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 145 states have (on average 1.5448275862068965) internal successors, (224), 188 states have internal predecessors, (224), 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) [2023-11-23 21:23:19,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 234 transitions. [2023-11-23 21:23:19,079 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 234 transitions. Word has length 24 [2023-11-23 21:23:19,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:19,079 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 234 transitions. [2023-11-23 21:23:19,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:19,080 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 234 transitions. [2023-11-23 21:23:19,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 21:23:19,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:19,081 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:19,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:19,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 21:23:19,296 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:19,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:19,296 INFO L85 PathProgramCache]: Analyzing trace with hash -432069064, now seen corresponding path program 1 times [2023-11-23 21:23:19,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:19,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809563202] [2023-11-23 21:23:19,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:19,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:19,304 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:19,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1994573706] [2023-11-23 21:23:19,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:19,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:19,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:19,307 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:19,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 21:23:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:19,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:23:19,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:19,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:19,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:19,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:19,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809563202] [2023-11-23 21:23:19,515 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:19,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994573706] [2023-11-23 21:23:19,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994573706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:19,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:19,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:23:19,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510000125] [2023-11-23 21:23:19,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:19,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:23:19,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:19,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:23:19,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:23:19,518 INFO L87 Difference]: Start difference. First operand 196 states and 234 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:19,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:19,948 INFO L93 Difference]: Finished difference Result 258 states and 291 transitions. [2023-11-23 21:23:19,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:23:19,952 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2023-11-23 21:23:19,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:19,954 INFO L225 Difference]: With dead ends: 258 [2023-11-23 21:23:19,954 INFO L226 Difference]: Without dead ends: 256 [2023-11-23 21:23:19,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:23:19,955 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 329 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:19,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 187 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:23:19,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-23 21:23:19,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 197. [2023-11-23 21:23:19,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 146 states have (on average 1.5342465753424657) internal successors, (224), 189 states have internal predecessors, (224), 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) [2023-11-23 21:23:19,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 234 transitions. [2023-11-23 21:23:19,969 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 234 transitions. Word has length 25 [2023-11-23 21:23:19,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:19,969 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 234 transitions. [2023-11-23 21:23:19,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:19,970 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 234 transitions. [2023-11-23 21:23:19,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 21:23:19,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:19,975 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 21:23:20,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-23 21:23:20,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 21:23:20,189 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:20,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:20,189 INFO L85 PathProgramCache]: Analyzing trace with hash 247578008, now seen corresponding path program 1 times [2023-11-23 21:23:20,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:20,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270604192] [2023-11-23 21:23:20,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:20,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:20,198 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:20,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [224605993] [2023-11-23 21:23:20,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:20,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:20,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:20,200 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:20,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 21:23:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:20,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:23:20,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:20,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:20,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:20,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:20,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270604192] [2023-11-23 21:23:20,441 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:20,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224605993] [2023-11-23 21:23:20,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224605993] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:20,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:20,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:23:20,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062849849] [2023-11-23 21:23:20,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:20,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:23:20,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:20,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:23:20,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:23:20,443 INFO L87 Difference]: Start difference. First operand 197 states and 234 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:23:20,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:20,968 INFO L93 Difference]: Finished difference Result 256 states and 289 transitions. [2023-11-23 21:23:20,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:23:20,969 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2023-11-23 21:23:20,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:20,970 INFO L225 Difference]: With dead ends: 256 [2023-11-23 21:23:20,971 INFO L226 Difference]: Without dead ends: 254 [2023-11-23 21:23:20,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:23:20,972 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 508 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:20,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 110 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:23:20,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-11-23 21:23:20,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 200. [2023-11-23 21:23:20,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 149 states have (on average 1.516778523489933) internal successors, (226), 192 states have internal predecessors, (226), 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) [2023-11-23 21:23:20,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 236 transitions. [2023-11-23 21:23:20,984 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 236 transitions. Word has length 28 [2023-11-23 21:23:20,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:20,984 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 236 transitions. [2023-11-23 21:23:20,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:23:20,984 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 236 transitions. [2023-11-23 21:23:20,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 21:23:20,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:20,985 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 21:23:21,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:21,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-23 21:23:21,205 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:21,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:21,205 INFO L85 PathProgramCache]: Analyzing trace with hash -915016260, now seen corresponding path program 1 times [2023-11-23 21:23:21,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:21,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780291671] [2023-11-23 21:23:21,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:21,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:21,218 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:21,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [128001885] [2023-11-23 21:23:21,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:21,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:21,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:21,220 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:21,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 21:23:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:21,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:23:21,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:21,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:21,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:21,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:21,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780291671] [2023-11-23 21:23:21,484 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:21,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128001885] [2023-11-23 21:23:21,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128001885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:21,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:21,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:23:21,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602972106] [2023-11-23 21:23:21,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:21,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:23:21,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:21,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:23:21,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:23:21,486 INFO L87 Difference]: Start difference. First operand 200 states and 236 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:23:21,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:21,911 INFO L93 Difference]: Finished difference Result 254 states and 287 transitions. [2023-11-23 21:23:21,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 21:23:21,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2023-11-23 21:23:21,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:21,914 INFO L225 Difference]: With dead ends: 254 [2023-11-23 21:23:21,914 INFO L226 Difference]: Without dead ends: 252 [2023-11-23 21:23:21,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:23:21,915 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 323 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:21,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 116 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:23:21,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-11-23 21:23:21,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 201. [2023-11-23 21:23:21,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 150 states have (on average 1.5066666666666666) internal successors, (226), 193 states have internal predecessors, (226), 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) [2023-11-23 21:23:21,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 236 transitions. [2023-11-23 21:23:21,926 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 236 transitions. Word has length 29 [2023-11-23 21:23:21,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:21,926 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 236 transitions. [2023-11-23 21:23:21,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:23:21,927 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 236 transitions. [2023-11-23 21:23:21,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-23 21:23:21,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:21,927 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 21:23:21,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:22,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-23 21:23:22,148 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:22,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:22,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1699267098, now seen corresponding path program 1 times [2023-11-23 21:23:22,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:22,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760043107] [2023-11-23 21:23:22,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:22,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:22,157 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:22,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715015076] [2023-11-23 21:23:22,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:22,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:22,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:22,158 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:22,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 21:23:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:22,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:23:22,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:22,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:22,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:22,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:22,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760043107] [2023-11-23 21:23:22,271 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:22,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715015076] [2023-11-23 21:23:22,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715015076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:22,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:22,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:22,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350837114] [2023-11-23 21:23:22,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:22,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:23:22,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:22,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:23:22,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:23:22,274 INFO L87 Difference]: Start difference. First operand 201 states and 236 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:22,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:22,454 INFO L93 Difference]: Finished difference Result 228 states and 261 transitions. [2023-11-23 21:23:22,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:23:22,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2023-11-23 21:23:22,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:22,456 INFO L225 Difference]: With dead ends: 228 [2023-11-23 21:23:22,456 INFO L226 Difference]: Without dead ends: 226 [2023-11-23 21:23:22,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:23:22,458 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 78 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:22,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 116 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:23:22,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-11-23 21:23:22,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 202. [2023-11-23 21:23:22,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 151 states have (on average 1.4966887417218544) internal successors, (226), 194 states have internal predecessors, (226), 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) [2023-11-23 21:23:22,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 236 transitions. [2023-11-23 21:23:22,467 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 236 transitions. Word has length 30 [2023-11-23 21:23:22,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:22,468 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 236 transitions. [2023-11-23 21:23:22,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:22,469 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 236 transitions. [2023-11-23 21:23:22,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-23 21:23:22,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:22,469 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 21:23:22,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:22,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:22,689 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:22,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:22,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1137672574, now seen corresponding path program 1 times [2023-11-23 21:23:22,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:22,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564250344] [2023-11-23 21:23:22,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:22,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:22,698 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:22,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1162826931] [2023-11-23 21:23:22,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:22,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:22,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:22,704 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:22,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 21:23:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:22,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:23:22,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:22,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:22,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:22,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:22,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564250344] [2023-11-23 21:23:22,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:22,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162826931] [2023-11-23 21:23:22,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162826931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:22,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:22,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:22,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251899106] [2023-11-23 21:23:22,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:22,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:23:22,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:22,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:23:22,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:23:22,820 INFO L87 Difference]: Start difference. First operand 202 states and 236 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:22,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:22,981 INFO L93 Difference]: Finished difference Result 226 states and 259 transitions. [2023-11-23 21:23:22,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:23:22,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2023-11-23 21:23:22,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:22,983 INFO L225 Difference]: With dead ends: 226 [2023-11-23 21:23:22,983 INFO L226 Difference]: Without dead ends: 224 [2023-11-23 21:23:22,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:23:22,984 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 71 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:22,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 120 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:23:22,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-23 21:23:22,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 203. [2023-11-23 21:23:22,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 152 states have (on average 1.486842105263158) internal successors, (226), 195 states have internal predecessors, (226), 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) [2023-11-23 21:23:22,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 236 transitions. [2023-11-23 21:23:22,996 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 236 transitions. Word has length 31 [2023-11-23 21:23:22,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:22,996 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 236 transitions. [2023-11-23 21:23:22,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 21:23:22,997 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 236 transitions. [2023-11-23 21:23:23,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-23 21:23:23,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:23,001 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:23,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:23,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 21:23:23,220 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:23,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:23,221 INFO L85 PathProgramCache]: Analyzing trace with hash 586532928, now seen corresponding path program 1 times [2023-11-23 21:23:23,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:23,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664963188] [2023-11-23 21:23:23,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:23,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:23,229 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:23,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1759690533] [2023-11-23 21:23:23,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:23,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:23,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:23,230 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:23,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 21:23:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:23,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:23:23,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:23,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:23,436 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:23,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:23,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664963188] [2023-11-23 21:23:23,437 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:23,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759690533] [2023-11-23 21:23:23,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759690533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:23,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:23,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:23:23,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667376863] [2023-11-23 21:23:23,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:23,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:23:23,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:23,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:23:23,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:23,439 INFO L87 Difference]: Start difference. First operand 203 states and 236 transitions. Second operand has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 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) [2023-11-23 21:23:23,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:23,679 INFO L93 Difference]: Finished difference Result 224 states and 257 transitions. [2023-11-23 21:23:23,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:23:23,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 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 39 [2023-11-23 21:23:23,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:23,682 INFO L225 Difference]: With dead ends: 224 [2023-11-23 21:23:23,682 INFO L226 Difference]: Without dead ends: 222 [2023-11-23 21:23:23,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:23:23,683 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 195 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:23,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 101 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:23:23,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-11-23 21:23:23,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 212. [2023-11-23 21:23:23,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 161 states have (on average 1.4658385093167703) internal successors, (236), 204 states have internal predecessors, (236), 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) [2023-11-23 21:23:23,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 246 transitions. [2023-11-23 21:23:23,694 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 246 transitions. Word has length 39 [2023-11-23 21:23:23,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:23,694 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 246 transitions. [2023-11-23 21:23:23,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 states have internal predecessors, (32), 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) [2023-11-23 21:23:23,694 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 246 transitions. [2023-11-23 21:23:23,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-23 21:23:23,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:23,695 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:23,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:23,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:23,908 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:23,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:23,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1002651689, now seen corresponding path program 1 times [2023-11-23 21:23:23,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:23,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005523741] [2023-11-23 21:23:23,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:23,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:23,922 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:23,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059369750] [2023-11-23 21:23:23,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:23,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:23,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:23,936 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:23,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-23 21:23:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:23,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:23:23,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:24,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:24,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:24,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:24,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005523741] [2023-11-23 21:23:24,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:24,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059369750] [2023-11-23 21:23:24,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059369750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:24,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:24,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:23:24,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83161930] [2023-11-23 21:23:24,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:24,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:23:24,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:24,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:23:24,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:24,097 INFO L87 Difference]: Start difference. First operand 212 states and 246 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:23:24,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:24,285 INFO L93 Difference]: Finished difference Result 222 states and 255 transitions. [2023-11-23 21:23:24,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:23:24,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2023-11-23 21:23:24,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:24,287 INFO L225 Difference]: With dead ends: 222 [2023-11-23 21:23:24,287 INFO L226 Difference]: Without dead ends: 221 [2023-11-23 21:23:24,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:23:24,288 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 192 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:24,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 125 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:23:24,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-11-23 21:23:24,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 213. [2023-11-23 21:23:24,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 162 states have (on average 1.462962962962963) internal successors, (237), 205 states have internal predecessors, (237), 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) [2023-11-23 21:23:24,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 247 transitions. [2023-11-23 21:23:24,301 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 247 transitions. Word has length 40 [2023-11-23 21:23:24,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:24,301 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 247 transitions. [2023-11-23 21:23:24,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:23:24,302 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 247 transitions. [2023-11-23 21:23:24,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-23 21:23:24,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:24,303 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:24,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:24,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-11-23 21:23:24,521 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:24,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:24,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1475602827, now seen corresponding path program 1 times [2023-11-23 21:23:24,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:24,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596426023] [2023-11-23 21:23:24,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:24,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:24,530 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:24,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146231021] [2023-11-23 21:23:24,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:24,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:24,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:24,532 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:24,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-23 21:23:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:24,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:23:24,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:24,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:24,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:24,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:24,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596426023] [2023-11-23 21:23:24,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:24,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146231021] [2023-11-23 21:23:24,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146231021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:24,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:24,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:24,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458660262] [2023-11-23 21:23:24,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:24,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:23:24,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:24,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:23:24,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:23:24,631 INFO L87 Difference]: Start difference. First operand 213 states and 247 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:23:24,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:24,807 INFO L93 Difference]: Finished difference Result 213 states and 247 transitions. [2023-11-23 21:23:24,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:23:24,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2023-11-23 21:23:24,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:24,809 INFO L225 Difference]: With dead ends: 213 [2023-11-23 21:23:24,809 INFO L226 Difference]: Without dead ends: 212 [2023-11-23 21:23:24,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:24,810 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 78 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:24,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 199 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:23:24,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-23 21:23:24,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2023-11-23 21:23:24,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 162 states have (on average 1.4506172839506173) internal successors, (235), 204 states have internal predecessors, (235), 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) [2023-11-23 21:23:24,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 245 transitions. [2023-11-23 21:23:24,821 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 245 transitions. Word has length 42 [2023-11-23 21:23:24,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:24,822 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 245 transitions. [2023-11-23 21:23:24,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:23:24,822 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 245 transitions. [2023-11-23 21:23:24,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-23 21:23:24,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:24,823 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:24,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:25,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-23 21:23:25,044 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:25,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:25,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2056539029, now seen corresponding path program 1 times [2023-11-23 21:23:25,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:25,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736823742] [2023-11-23 21:23:25,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:25,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:25,055 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:25,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1454157884] [2023-11-23 21:23:25,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:25,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:25,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:25,059 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:25,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-23 21:23:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:25,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:23:25,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:25,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:25,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:25,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:25,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736823742] [2023-11-23 21:23:25,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:25,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454157884] [2023-11-23 21:23:25,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454157884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:25,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:25,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:23:25,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406287360] [2023-11-23 21:23:25,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:25,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:23:25,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:25,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:23:25,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:25,323 INFO L87 Difference]: Start difference. First operand 212 states and 245 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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) [2023-11-23 21:23:25,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:25,511 INFO L93 Difference]: Finished difference Result 220 states and 252 transitions. [2023-11-23 21:23:25,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:23:25,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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 42 [2023-11-23 21:23:25,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:25,516 INFO L225 Difference]: With dead ends: 220 [2023-11-23 21:23:25,516 INFO L226 Difference]: Without dead ends: 219 [2023-11-23 21:23:25,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:25,517 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 264 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:25,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 92 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:23:25,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-23 21:23:25,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 213. [2023-11-23 21:23:25,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 163 states have (on average 1.4478527607361964) internal successors, (236), 205 states have internal predecessors, (236), 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) [2023-11-23 21:23:25,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 246 transitions. [2023-11-23 21:23:25,528 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 246 transitions. Word has length 42 [2023-11-23 21:23:25,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:25,528 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 246 transitions. [2023-11-23 21:23:25,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 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) [2023-11-23 21:23:25,529 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 246 transitions. [2023-11-23 21:23:25,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-23 21:23:25,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:25,530 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:25,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:25,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-23 21:23:25,745 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:25,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:25,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1500952490, now seen corresponding path program 1 times [2023-11-23 21:23:25,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:25,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869764683] [2023-11-23 21:23:25,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:25,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:25,753 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:25,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1957708382] [2023-11-23 21:23:25,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:25,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:25,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:25,755 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:25,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-23 21:23:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:25,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:23:25,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:25,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:25,848 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:25,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:25,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869764683] [2023-11-23 21:23:25,848 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:25,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957708382] [2023-11-23 21:23:25,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957708382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:25,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:25,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:25,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032011286] [2023-11-23 21:23:25,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:25,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:23:25,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:25,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:23:25,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:23:25,851 INFO L87 Difference]: Start difference. First operand 213 states and 246 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:23:25,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:25,903 INFO L93 Difference]: Finished difference Result 230 states and 263 transitions. [2023-11-23 21:23:25,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:23:25,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2023-11-23 21:23:25,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:25,906 INFO L225 Difference]: With dead ends: 230 [2023-11-23 21:23:25,906 INFO L226 Difference]: Without dead ends: 229 [2023-11-23 21:23:25,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:25,907 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 37 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:25,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 299 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:23:25,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-23 21:23:25,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 221. [2023-11-23 21:23:25,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 171 states have (on average 1.4385964912280702) internal successors, (246), 213 states have internal predecessors, (246), 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) [2023-11-23 21:23:25,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 256 transitions. [2023-11-23 21:23:25,919 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 256 transitions. Word has length 43 [2023-11-23 21:23:25,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:25,920 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 256 transitions. [2023-11-23 21:23:25,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:23:25,920 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 256 transitions. [2023-11-23 21:23:25,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-23 21:23:25,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:25,921 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:25,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:26,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-23 21:23:26,141 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:26,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:26,142 INFO L85 PathProgramCache]: Analyzing trace with hash -671799420, now seen corresponding path program 1 times [2023-11-23 21:23:26,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:26,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560009592] [2023-11-23 21:23:26,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:26,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:26,151 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:26,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005611942] [2023-11-23 21:23:26,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:26,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:26,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:26,153 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:26,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-23 21:23:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:26,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:23:26,200 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:26,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:26,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:26,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560009592] [2023-11-23 21:23:26,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:26,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005611942] [2023-11-23 21:23:26,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005611942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:26,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:26,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:26,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927466972] [2023-11-23 21:23:26,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:26,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:23:26,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:26,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:23:26,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:23:26,252 INFO L87 Difference]: Start difference. First operand 221 states and 256 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:23:26,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:26,393 INFO L93 Difference]: Finished difference Result 221 states and 256 transitions. [2023-11-23 21:23:26,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:23:26,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2023-11-23 21:23:26,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:26,395 INFO L225 Difference]: With dead ends: 221 [2023-11-23 21:23:26,396 INFO L226 Difference]: Without dead ends: 219 [2023-11-23 21:23:26,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:26,397 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 75 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:26,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 195 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:23:26,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-23 21:23:26,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2023-11-23 21:23:26,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 171 states have (on average 1.4210526315789473) internal successors, (243), 211 states have internal predecessors, (243), 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) [2023-11-23 21:23:26,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 253 transitions. [2023-11-23 21:23:26,408 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 253 transitions. Word has length 43 [2023-11-23 21:23:26,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:26,408 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 253 transitions. [2023-11-23 21:23:26,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:23:26,408 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 253 transitions. [2023-11-23 21:23:26,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-23 21:23:26,409 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:26,409 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:26,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:26,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:26,625 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:26,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:26,625 INFO L85 PathProgramCache]: Analyzing trace with hash 649054583, now seen corresponding path program 1 times [2023-11-23 21:23:26,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:26,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365669211] [2023-11-23 21:23:26,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:26,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:26,632 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:26,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605597714] [2023-11-23 21:23:26,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:26,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:26,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:26,636 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:26,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-23 21:23:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:26,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:23:26,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:26,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:26,733 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:26,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:26,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365669211] [2023-11-23 21:23:26,733 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:26,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605597714] [2023-11-23 21:23:26,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605597714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:26,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:26,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:23:26,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519081600] [2023-11-23 21:23:26,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:26,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:23:26,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:26,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:23:26,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:23:26,736 INFO L87 Difference]: Start difference. First operand 219 states and 253 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:23:26,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:26,792 INFO L93 Difference]: Finished difference Result 259 states and 267 transitions. [2023-11-23 21:23:26,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:23:26,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2023-11-23 21:23:26,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:26,795 INFO L225 Difference]: With dead ends: 259 [2023-11-23 21:23:26,795 INFO L226 Difference]: Without dead ends: 258 [2023-11-23 21:23:26,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:23:26,797 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 61 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:26,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 291 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:23:26,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-11-23 21:23:26,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 227. [2023-11-23 21:23:26,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 179 states have (on average 1.4078212290502794) internal successors, (252), 219 states have internal predecessors, (252), 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) [2023-11-23 21:23:26,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 262 transitions. [2023-11-23 21:23:26,816 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 262 transitions. Word has length 44 [2023-11-23 21:23:26,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:26,816 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 262 transitions. [2023-11-23 21:23:26,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:23:26,817 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 262 transitions. [2023-11-23 21:23:26,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-23 21:23:26,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:26,818 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:26,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:27,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:27,038 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:27,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:27,038 INFO L85 PathProgramCache]: Analyzing trace with hash 693670232, now seen corresponding path program 1 times [2023-11-23 21:23:27,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:27,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906150712] [2023-11-23 21:23:27,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:27,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:27,046 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:27,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420250056] [2023-11-23 21:23:27,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:27,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:27,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:27,048 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:27,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-23 21:23:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:27,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 21:23:27,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:27,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:23:27,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:23:27,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:27,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906150712] [2023-11-23 21:23:27,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:27,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420250056] [2023-11-23 21:23:27,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420250056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:27,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:23:27,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:23:27,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4964870] [2023-11-23 21:23:27,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:27,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:23:27,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:27,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:23:27,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:23:27,374 INFO L87 Difference]: Start difference. First operand 227 states and 262 transitions. Second operand has 7 states, 5 states have (on average 7.8) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:23:27,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:27,646 INFO L93 Difference]: Finished difference Result 233 states and 267 transitions. [2023-11-23 21:23:27,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:23:27,646 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2023-11-23 21:23:27,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:27,648 INFO L225 Difference]: With dead ends: 233 [2023-11-23 21:23:27,648 INFO L226 Difference]: Without dead ends: 231 [2023-11-23 21:23:27,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:23:27,649 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 239 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:27,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 251 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:23:27,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-11-23 21:23:27,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 225. [2023-11-23 21:23:27,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 179 states have (on average 1.3854748603351956) internal successors, (248), 217 states have internal predecessors, (248), 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) [2023-11-23 21:23:27,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 258 transitions. [2023-11-23 21:23:27,661 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 258 transitions. Word has length 45 [2023-11-23 21:23:27,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:27,662 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 258 transitions. [2023-11-23 21:23:27,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 7 states have internal predecessors, (39), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:23:27,662 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 258 transitions. [2023-11-23 21:23:27,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-23 21:23:27,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:27,663 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:27,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:27,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:27,883 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:27,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:27,884 INFO L85 PathProgramCache]: Analyzing trace with hash 28940768, now seen corresponding path program 1 times [2023-11-23 21:23:27,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:27,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084782567] [2023-11-23 21:23:27,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:27,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:27,893 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:27,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1986911802] [2023-11-23 21:23:27,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:27,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:27,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:27,895 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:27,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-23 21:23:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:27,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 21:23:27,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:23:28,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:23:28,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:28,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084782567] [2023-11-23 21:23:28,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:28,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986911802] [2023-11-23 21:23:28,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986911802] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:23:28,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [343644810] [2023-11-23 21:23:28,613 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2023-11-23 21:23:28,613 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:23:28,616 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:23:28,620 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:23:28,621 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:23:34,785 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 95 for LOIs [2023-11-23 21:23:34,856 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-11-23 21:23:34,902 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:23:38,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [343644810] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:38,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:23:38,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [8] total 25 [2023-11-23 21:23:38,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799992864] [2023-11-23 21:23:38,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:38,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-23 21:23:38,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:38,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-23 21:23:38,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=722, Unknown=0, NotChecked=0, Total=870 [2023-11-23 21:23:38,846 INFO L87 Difference]: Start difference. First operand 225 states and 258 transitions. Second operand has 19 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:23:40,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:40,861 INFO L93 Difference]: Finished difference Result 254 states and 261 transitions. [2023-11-23 21:23:40,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 21:23:40,861 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 46 [2023-11-23 21:23:40,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:40,863 INFO L225 Difference]: With dead ends: 254 [2023-11-23 21:23:40,863 INFO L226 Difference]: Without dead ends: 187 [2023-11-23 21:23:40,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 54 SyntacticMatches, 22 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=301, Invalid=1105, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 21:23:40,865 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 625 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:40,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 145 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 21:23:40,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-23 21:23:40,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 180. [2023-11-23 21:23:40,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 134 states have (on average 1.3134328358208955) internal successors, (176), 172 states have internal predecessors, (176), 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) [2023-11-23 21:23:40,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 186 transitions. [2023-11-23 21:23:40,878 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 186 transitions. Word has length 46 [2023-11-23 21:23:40,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:40,879 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 186 transitions. [2023-11-23 21:23:40,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:23:40,879 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 186 transitions. [2023-11-23 21:23:40,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-23 21:23:40,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:40,880 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:40,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-23 21:23:41,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-23 21:23:41,097 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:41,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:41,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1602318510, now seen corresponding path program 1 times [2023-11-23 21:23:41,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:41,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741153668] [2023-11-23 21:23:41,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:41,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:41,105 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:41,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126006906] [2023-11-23 21:23:41,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:41,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:41,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:41,120 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:41,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-23 21:23:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:41,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 21:23:41,171 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:41,491 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:23:41,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:23:41,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:41,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741153668] [2023-11-23 21:23:41,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:41,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126006906] [2023-11-23 21:23:41,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126006906] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:23:41,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1016914946] [2023-11-23 21:23:41,723 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-11-23 21:23:41,724 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:23:41,724 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:23:41,725 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:23:41,725 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:23:46,680 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 103 for LOIs [2023-11-23 21:23:46,727 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-11-23 21:23:46,754 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:23:50,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1016914946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:23:50,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:23:50,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [8] total 28 [2023-11-23 21:23:50,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327145433] [2023-11-23 21:23:50,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:23:50,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-23 21:23:50,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:50,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-23 21:23:50,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2023-11-23 21:23:50,682 INFO L87 Difference]: Start difference. First operand 180 states and 186 transitions. Second operand has 22 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:23:54,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:54,648 INFO L93 Difference]: Finished difference Result 289 states and 297 transitions. [2023-11-23 21:23:54,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-23 21:23:54,649 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 50 [2023-11-23 21:23:54,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:54,651 INFO L225 Difference]: With dead ends: 289 [2023-11-23 21:23:54,652 INFO L226 Difference]: Without dead ends: 261 [2023-11-23 21:23:54,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 61 SyntacticMatches, 23 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 901 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=550, Invalid=1900, Unknown=0, NotChecked=0, Total=2450 [2023-11-23 21:23:54,654 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 301 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:54,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 127 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 21:23:54,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-11-23 21:23:54,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 234. [2023-11-23 21:23:54,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 187 states have (on average 1.2834224598930482) internal successors, (240), 225 states have internal predecessors, (240), 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) [2023-11-23 21:23:54,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 252 transitions. [2023-11-23 21:23:54,683 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 252 transitions. Word has length 50 [2023-11-23 21:23:54,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:54,684 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 252 transitions. [2023-11-23 21:23:54,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 21:23:54,684 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 252 transitions. [2023-11-23 21:23:54,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-23 21:23:54,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:23:54,685 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:54,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:54,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-23 21:23:54,905 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-11-23 21:23:54,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:23:54,905 INFO L85 PathProgramCache]: Analyzing trace with hash -2065169296, now seen corresponding path program 1 times [2023-11-23 21:23:54,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:23:54,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670145700] [2023-11-23 21:23:54,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:54,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:23:54,913 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 21:23:54,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29209398] [2023-11-23 21:23:54,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:23:54,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:54,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:23:54,915 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:23:54,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a130b4e-e52a-4318-beb2-c03492d6088f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-23 21:23:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:23:54,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 21:23:54,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:23:55,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:23:55,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:23:55,425 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:23:55,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670145700] [2023-11-23 21:23:55,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 21:23:55,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29209398] [2023-11-23 21:23:55,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29209398] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:23:55,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2009254884] [2023-11-23 21:23:55,429 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2023-11-23 21:23:55,429 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:23:55,429 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:23:55,430 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:23:55,430 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:23:59,030 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 103 for LOIs [2023-11-23 21:23:59,075 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 68 for LOIs [2023-11-23 21:23:59,101 INFO L180 IcfgInterpreter]: Interpretation finished